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Finding the Fourth Proportional to 114,137.60, 157,505.28 and 66,392.32

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Solution

The fourth proportional to 114,137.60, 157,505.28 and 66,392.32 is: 91,618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,137.60 : 157,505.28 = 66,392.32 : x
  2. Step 2: Convert to fraction form
    114,137.60/157,505.28 = 66,392.32/x
  3. Step 3: Cross multiply
    114,137.60x = 157,505.28 × 66,392.32
  4. Step 4: Simplify right side
    114,137.60x = 10,457,140,951.45
  5. Step 5: Solve for x
    x = 10,457,140,951.45/114,137.60
  6. Step 6: Final answer
    x = 91,618.72

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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.