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Finding the Fourth Proportional to 110,862.64, 152,990.59 and 63,115.99

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Solution

The fourth proportional to 110,862.64, 152,990.59 and 63,115.99 is: 87,100.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,862.64 : 152,990.59 = 63,115.99 : x
  2. Step 2: Convert to fraction form
    110,862.64/152,990.59 = 63,115.99/x
  3. Step 3: Cross multiply
    110,862.64x = 152,990.59 × 63,115.99
  4. Step 4: Simplify right side
    110,862.64x = 9,656,152,270.04
  5. Step 5: Solve for x
    x = 9,656,152,270.04/110,862.64
  6. Step 6: Final answer
    x = 87,100.15

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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.