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Finding the Fourth Proportional to 112,499.60, 168,943.80 and 60,011.60

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Solution

The fourth proportional to 112,499.60, 168,943.80 and 60,011.60 is: 90,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,499.60 : 168,943.80 = 60,011.60 : x
  2. Step 2: Convert to fraction form
    112,499.60/168,943.80 = 60,011.60/x
  3. Step 3: Cross multiply
    112,499.60x = 168,943.80 × 60,011.60
  4. Step 4: Simplify right side
    112,499.60x = 10,138,587,748.08
  5. Step 5: Solve for x
    x = 10,138,587,748.08/112,499.60
  6. Step 6: Final answer
    x = 90,121.10

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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.