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Finding the Fourth Proportional to 364,962.61, 547,443.92 and 140,428.79

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Solution

The fourth proportional to 364,962.61, 547,443.92 and 140,428.79 is: 210,643.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,962.61 : 547,443.92 = 140,428.79 : x
  2. Step 2: Convert to fraction form
    364,962.61/547,443.92 = 140,428.79/x
  3. Step 3: Cross multiply
    364,962.61x = 547,443.92 × 140,428.79
  4. Step 4: Simplify right side
    364,962.61x = 76,876,886,155.31
  5. Step 5: Solve for x
    x = 76,876,886,155.31/364,962.61
  6. Step 6: Final answer
    x = 210,643.18

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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.