Home / 18,678,266.70-28,017,400.05-5,215,073.10

Finding the Fourth Proportional to 18,678,266.70, 28,017,400.05 and 5,215,073.10

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Solution

The fourth proportional to 18,678,266.70, 28,017,400.05 and 5,215,073.10 is: 7,822,609.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,266.70 : 28,017,400.05 = 5,215,073.10 : x
  2. Step 2: Convert to fraction form
    18,678,266.70/28,017,400.05 = 5,215,073.10/x
  3. Step 3: Cross multiply
    18,678,266.70x = 28,017,400.05 × 5,215,073.10
  4. Step 4: Simplify right side
    18,678,266.70x = 146,112,789,332,693.66
  5. Step 5: Solve for x
    x = 146,112,789,332,693.66/18,678,266.70
  6. Step 6: Final answer
    x = 7,822,609.65

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Double scale
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Similar ratio
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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.