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Finding the Fourth Proportional to 113,319,113.20, 169,978,669.80 and 88,660,250.80

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Solution

The fourth proportional to 113,319,113.20, 169,978,669.80 and 88,660,250.80 is: 132,990,376.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,319,113.20 : 169,978,669.80 = 88,660,250.80 : x
  2. Step 2: Convert to fraction form
    113,319,113.20/169,978,669.80 = 88,660,250.80/x
  3. Step 3: Cross multiply
    113,319,113.20x = 169,978,669.80 × 88,660,250.80
  4. Step 4: Simplify right side
    113,319,113.20x = 15,070,351,495,118,386
  5. Step 5: Solve for x
    x = 15,070,351,495,118,386/113,319,113.20
  6. Step 6: Final answer
    x = 132,990,376.20

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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.