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Finding the Fourth Proportional to 98,803.80, 147,773.70 and 88,349.40

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Solution

The fourth proportional to 98,803.80, 147,773.70 and 88,349.40 is: 132,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,803.80 : 147,773.70 = 88,349.40 : x
  2. Step 2: Convert to fraction form
    98,803.80/147,773.70 = 88,349.40/x
  3. Step 3: Cross multiply
    98,803.80x = 147,773.70 × 88,349.40
  4. Step 4: Simplify right side
    98,803.80x = 13,055,717,730.78
  5. Step 5: Solve for x
    x = 13,055,717,730.78/98,803.80
  6. Step 6: Final answer
    x = 132,137.81

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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.