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Finding the Fourth Proportional to 52,657.62, 78,918.39 and 39,406.02

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Solution

The fourth proportional to 52,657.62, 78,918.39 and 39,406.02 is: 59,058.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,657.62 : 78,918.39 = 39,406.02 : x
  2. Step 2: Convert to fraction form
    52,657.62/78,918.39 = 39,406.02/x
  3. Step 3: Cross multiply
    52,657.62x = 78,918.39 × 39,406.02
  4. Step 4: Simplify right side
    52,657.62x = 3,109,859,654.71
  5. Step 5: Solve for x
    x = 3,109,859,654.71/52,657.62
  6. Step 6: Final answer
    x = 59,058.11

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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.