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Finding the Fourth Proportional to 114,938.60, 172,407.90 and 88,694.60

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Solution

The fourth proportional to 114,938.60, 172,407.90 and 88,694.60 is: 133,041.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,938.60 : 172,407.90 = 88,694.60 : x
  2. Step 2: Convert to fraction form
    114,938.60/172,407.90 = 88,694.60/x
  3. Step 3: Cross multiply
    114,938.60x = 172,407.90 × 88,694.60
  4. Step 4: Simplify right side
    114,938.60x = 15,291,649,727.34
  5. Step 5: Solve for x
    x = 15,291,649,727.34/114,938.60
  6. Step 6: Final answer
    x = 133,041.90

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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.