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Finding the Fourth Proportional to 524,016,327.20, 786,024,490.80 and 472,997,991.20

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Solution

The fourth proportional to 524,016,327.20, 786,024,490.80 and 472,997,991.20 is: 709,496,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,016,327.20 : 786,024,490.80 = 472,997,991.20 : x
  2. Step 2: Convert to fraction form
    524,016,327.20/786,024,490.80 = 472,997,991.20/x
  3. Step 3: Cross multiply
    524,016,327.20x = 786,024,490.80 × 472,997,991.20
  4. Step 4: Simplify right side
    524,016,327.20x = 371,788,005,182,402,880
  5. Step 5: Solve for x
    x = 371,788,005,182,402,880/524,016,327.20
  6. Step 6: Final answer
    x = 709,496,986.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.