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Finding the Fourth Proportional to 118,569.60, 177,854.40 and 113,320.80

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Solution

The fourth proportional to 118,569.60, 177,854.40 and 113,320.80 is: 169,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,569.60 : 177,854.40 = 113,320.80 : x
  2. Step 2: Convert to fraction form
    118,569.60/177,854.40 = 113,320.80/x
  3. Step 3: Cross multiply
    118,569.60x = 177,854.40 × 113,320.80
  4. Step 4: Simplify right side
    118,569.60x = 20,154,602,891.52
  5. Step 5: Solve for x
    x = 20,154,602,891.52/118,569.60
  6. Step 6: Final answer
    x = 169,981.20

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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.