Home / 12,840,158.76-17,705,188.56-8,186,572.68

Finding the Fourth Proportional to 12,840,158.76, 17,705,188.56 and 8,186,572.68

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Solution

The fourth proportional to 12,840,158.76, 17,705,188.56 and 8,186,572.68 is: 11,288,397.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840,158.76 : 17,705,188.56 = 8,186,572.68 : x
  2. Step 2: Convert to fraction form
    12,840,158.76/17,705,188.56 = 8,186,572.68/x
  3. Step 3: Cross multiply
    12,840,158.76x = 17,705,188.56 × 8,186,572.68
  4. Step 4: Simplify right side
    12,840,158.76x = 144,944,812,959,544.53
  5. Step 5: Solve for x
    x = 144,944,812,959,544.53/12,840,158.76
  6. Step 6: Final answer
    x = 11,288,397.26

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Double scale
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1.5x scale

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.