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Finding the Fourth Proportional to 113,967.60, 157,240.44 and 66,211.80

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Solution

The fourth proportional to 113,967.60, 157,240.44 and 66,211.80 is: 91,352.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,967.60 : 157,240.44 = 66,211.80 : x
  2. Step 2: Convert to fraction form
    113,967.60/157,240.44 = 66,211.80/x
  3. Step 3: Cross multiply
    113,967.60x = 157,240.44 × 66,211.80
  4. Step 4: Simplify right side
    113,967.60x = 10,411,172,565.19
  5. Step 5: Solve for x
    x = 10,411,172,565.19/113,967.60
  6. Step 6: Final answer
    x = 91,352.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.