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Finding the Fourth Proportional to 524,593.80, 786,890.70 and 145,513.80

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Solution

The fourth proportional to 524,593.80, 786,890.70 and 145,513.80 is: 218,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,593.80 : 786,890.70 = 145,513.80 : x
  2. Step 2: Convert to fraction form
    524,593.80/786,890.70 = 145,513.80/x
  3. Step 3: Cross multiply
    524,593.80x = 786,890.70 × 145,513.80
  4. Step 4: Simplify right side
    524,593.80x = 114,503,455,941.66
  5. Step 5: Solve for x
    x = 114,503,455,941.66/524,593.80
  6. Step 6: Final answer
    x = 218,270.70

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Half scale
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Double scale
Find fourth proportional to 524,594.80, 786,892.20 and 145,514.80
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.