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Finding the Fourth Proportional to 113,319,105.20, 169,978,657.80 and 88,660,242.80

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Solution

The fourth proportional to 113,319,105.20, 169,978,657.80 and 88,660,242.80 is: 132,990,364.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,319,105.20 : 169,978,657.80 = 88,660,242.80 : x
  2. Step 2: Convert to fraction form
    113,319,105.20/169,978,657.80 = 88,660,242.80/x
  3. Step 3: Cross multiply
    113,319,105.20x = 169,978,657.80 × 88,660,242.80
  4. Step 4: Simplify right side
    113,319,105.20x = 15,070,349,071,366,114
  5. Step 5: Solve for x
    x = 15,070,349,071,366,114/113,319,105.20
  6. Step 6: Final answer
    x = 132,990,364.20

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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.