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Finding the Fourth Proportional to 242,688.60, 363,158.10 and 163,956.60

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Solution

The fourth proportional to 242,688.60, 363,158.10 and 163,956.60 is: 245,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,688.60 : 363,158.10 = 163,956.60 : x
  2. Step 2: Convert to fraction form
    242,688.60/363,158.10 = 163,956.60/x
  3. Step 3: Cross multiply
    242,688.60x = 363,158.10 × 163,956.60
  4. Step 4: Simplify right side
    242,688.60x = 59,542,167,338.46
  5. Step 5: Solve for x
    x = 59,542,167,338.46/242,688.60
  6. Step 6: Final answer
    x = 245,343.90

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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.