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Finding the Fourth Proportional to 162,434.92, 243,864.60 and 130,431.08

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Solution

The fourth proportional to 162,434.92, 243,864.60 and 130,431.08 is: 195,817.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,434.92 : 243,864.60 = 130,431.08 : x
  2. Step 2: Convert to fraction form
    162,434.92/243,864.60 = 130,431.08/x
  3. Step 3: Cross multiply
    162,434.92x = 243,864.60 × 130,431.08
  4. Step 4: Simplify right side
    162,434.92x = 31,807,523,151.77
  5. Step 5: Solve for x
    x = 31,807,523,151.77/162,434.92
  6. Step 6: Final answer
    x = 195,817.03

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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.