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Finding the Fourth Proportional to 115,068.48, 172,353.48 and 55,780.14

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Solution

The fourth proportional to 115,068.48, 172,353.48 and 55,780.14 is: 83,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,068.48 : 172,353.48 = 55,780.14 : x
  2. Step 2: Convert to fraction form
    115,068.48/172,353.48 = 55,780.14/x
  3. Step 3: Cross multiply
    115,068.48x = 172,353.48 × 55,780.14
  4. Step 4: Simplify right side
    115,068.48x = 9,613,901,243.89
  5. Step 5: Solve for x
    x = 9,613,901,243.89/115,068.48
  6. Step 6: Final answer
    x = 83,549.39

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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.