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Finding the Fourth Proportional to 425,083.01, 637,708.59 and 121,479.89

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Solution

The fourth proportional to 425,083.01, 637,708.59 and 121,479.89 is: 182,243.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,083.01 : 637,708.59 = 121,479.89 : x
  2. Step 2: Convert to fraction form
    425,083.01/637,708.59 = 121,479.89/x
  3. Step 3: Cross multiply
    425,083.01x = 637,708.59 × 121,479.89
  4. Step 4: Simplify right side
    425,083.01x = 77,468,766,176.71
  5. Step 5: Solve for x
    x = 77,468,766,176.71/425,083.01
  6. Step 6: Final answer
    x = 182,243.86

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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.