Home / 20,072,769.40-30,109,154.10-19,036,459.45

Finding the Fourth Proportional to 20,072,769.40, 30,109,154.10 and 19,036,459.45

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Solution

The fourth proportional to 20,072,769.40, 30,109,154.10 and 19,036,459.45 is: 28,554,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072,769.40 : 30,109,154.10 = 19,036,459.45 : x
  2. Step 2: Convert to fraction form
    20,072,769.40/30,109,154.10 = 19,036,459.45/x
  3. Step 3: Cross multiply
    20,072,769.40x = 30,109,154.10 × 19,036,459.45
  4. Step 4: Simplify right side
    20,072,769.40x = 573,171,691,098,451.25
  5. Step 5: Solve for x
    x = 573,171,691,098,451.25/20,072,769.40
  6. Step 6: Final answer
    x = 28,554,689.18

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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.