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Finding the Fourth Proportional to 125,712.80, 176,231.20 and 125,712.80

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Solution

The fourth proportional to 125,712.80, 176,231.20 and 125,712.80 is: 176,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,712.80 : 176,231.20 = 125,712.80 : x
  2. Step 2: Convert to fraction form
    125,712.80/176,231.20 = 125,712.80/x
  3. Step 3: Cross multiply
    125,712.80x = 176,231.20 × 125,712.80
  4. Step 4: Simplify right side
    125,712.80x = 22,154,517,599.36
  5. Step 5: Solve for x
    x = 22,154,517,599.36/125,712.80
  6. Step 6: Final answer
    x = 176,231.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.