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Finding the Fourth Proportional to 621,711.12, 858,315.24 and 410,357.52

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Solution

The fourth proportional to 621,711.12, 858,315.24 and 410,357.52 is: 566,526.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,711.12 : 858,315.24 = 410,357.52 : x
  2. Step 2: Convert to fraction form
    621,711.12/858,315.24 = 410,357.52/x
  3. Step 3: Cross multiply
    621,711.12x = 858,315.24 × 410,357.52
  4. Step 4: Simplify right side
    621,711.12x = 352,216,113,264.61
  5. Step 5: Solve for x
    x = 352,216,113,264.61/621,711.12
  6. Step 6: Final answer
    x = 566,526.96

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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.