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Finding the Fourth Proportional to 638,347.70, 956,325.99 and 572,621.06

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Solution

The fourth proportional to 638,347.70, 956,325.99 and 572,621.06 is: 857,859.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,347.70 : 956,325.99 = 572,621.06 : x
  2. Step 2: Convert to fraction form
    638,347.70/956,325.99 = 572,621.06/x
  3. Step 3: Cross multiply
    638,347.70x = 956,325.99 × 572,621.06
  4. Step 4: Simplify right side
    638,347.70x = 547,612,406,637.49
  5. Step 5: Solve for x
    x = 547,612,406,637.49/638,347.70
  6. Step 6: Final answer
    x = 857,859.13

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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.