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Finding the Fourth Proportional to 563,257.57, 777,265.71 and 321,530.53

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Solution

The fourth proportional to 563,257.57, 777,265.71 and 321,530.53 is: 443,695.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,257.57 : 777,265.71 = 321,530.53 : x
  2. Step 2: Convert to fraction form
    563,257.57/777,265.71 = 321,530.53/x
  3. Step 3: Cross multiply
    563,257.57x = 777,265.71 × 321,530.53
  4. Step 4: Simplify right side
    563,257.57x = 249,914,655,687.13
  5. Step 5: Solve for x
    x = 249,914,655,687.13/563,257.57
  6. Step 6: Final answer
    x = 443,695.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.