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Finding the Fourth Proportional to 116,686.20, 174,737.70 and 77,028.60

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Solution

The fourth proportional to 116,686.20, 174,737.70 and 77,028.60 is: 115,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,686.20 : 174,737.70 = 77,028.60 : x
  2. Step 2: Convert to fraction form
    116,686.20/174,737.70 = 77,028.60/x
  3. Step 3: Cross multiply
    116,686.20x = 174,737.70 × 77,028.60
  4. Step 4: Simplify right side
    116,686.20x = 13,459,800,398.22
  5. Step 5: Solve for x
    x = 13,459,800,398.22/116,686.20
  6. Step 6: Final answer
    x = 115,350.40

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1.5x scale

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.