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Finding the Fourth Proportional to 86,191.17, 119,018.61 and 63,569.39

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Solution

The fourth proportional to 86,191.17, 119,018.61 and 63,569.39 is: 87,780.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,191.17 : 119,018.61 = 63,569.39 : x
  2. Step 2: Convert to fraction form
    86,191.17/119,018.61 = 63,569.39/x
  3. Step 3: Cross multiply
    86,191.17x = 119,018.61 × 63,569.39
  4. Step 4: Simplify right side
    86,191.17x = 7,565,939,841.25
  5. Step 5: Solve for x
    x = 7,565,939,841.25/86,191.17
  6. Step 6: Final answer
    x = 87,780.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.