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Finding the Fourth Proportional to 625,978.59, 938,977.62 and 152,672.91

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Solution

The fourth proportional to 625,978.59, 938,977.62 and 152,672.91 is: 229,011.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,978.59 : 938,977.62 = 152,672.91 : x
  2. Step 2: Convert to fraction form
    625,978.59/938,977.62 = 152,672.91/x
  3. Step 3: Cross multiply
    625,978.59x = 938,977.62 × 152,672.91
  4. Step 4: Simplify right side
    625,978.59x = 143,356,445,670.27
  5. Step 5: Solve for x
    x = 143,356,445,670.27/625,978.59
  6. Step 6: Final answer
    x = 229,011.74

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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.