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Finding the Fourth Proportional to 116,712.60, 174,680.10 and 102,715.80

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Solution

The fourth proportional to 116,712.60, 174,680.10 and 102,715.80 is: 153,731.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,712.60 : 174,680.10 = 102,715.80 : x
  2. Step 2: Convert to fraction form
    116,712.60/174,680.10 = 102,715.80/x
  3. Step 3: Cross multiply
    116,712.60x = 174,680.10 × 102,715.80
  4. Step 4: Simplify right side
    116,712.60x = 17,942,406,215.58
  5. Step 5: Solve for x
    x = 17,942,406,215.58/116,712.60
  6. Step 6: Final answer
    x = 153,731.53

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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.