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Finding the Fourth Proportional to 13,407,799.70, 20,111,699.55 and 4,432,351.70

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Solution

The fourth proportional to 13,407,799.70, 20,111,699.55 and 4,432,351.70 is: 6,648,527.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407,799.70 : 20,111,699.55 = 4,432,351.70 : x
  2. Step 2: Convert to fraction form
    13,407,799.70/20,111,699.55 = 4,432,351.70/x
  3. Step 3: Cross multiply
    13,407,799.70x = 20,111,699.55 × 4,432,351.70
  4. Step 4: Simplify right side
    13,407,799.70x = 89,142,125,690,331.73
  5. Step 5: Solve for x
    x = 89,142,125,690,331.73/13,407,799.70
  6. Step 6: Final answer
    x = 6,648,527.55

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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.