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Finding the Fourth Proportional to 453,275.60, 679,956.12 and 133,427.68

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Solution

The fourth proportional to 453,275.60, 679,956.12 and 133,427.68 is: 200,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,275.60 : 679,956.12 = 133,427.68 : x
  2. Step 2: Convert to fraction form
    453,275.60/679,956.12 = 133,427.68/x
  3. Step 3: Cross multiply
    453,275.60x = 679,956.12 × 133,427.68
  4. Step 4: Simplify right side
    453,275.60x = 90,724,967,593.40
  5. Step 5: Solve for x
    x = 90,724,967,593.40/453,275.60
  6. Step 6: Final answer
    x = 200,154.10

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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.