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Finding the Fourth Proportional to 161,253.40, 241,807.20 and 72,461.20

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Solution

The fourth proportional to 161,253.40, 241,807.20 and 72,461.20 is: 108,659.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,253.40 : 241,807.20 = 72,461.20 : x
  2. Step 2: Convert to fraction form
    161,253.40/241,807.20 = 72,461.20/x
  3. Step 3: Cross multiply
    161,253.40x = 241,807.20 × 72,461.20
  4. Step 4: Simplify right side
    161,253.40x = 17,521,639,880.64
  5. Step 5: Solve for x
    x = 17,521,639,880.64/161,253.40
  6. Step 6: Final answer
    x = 108,659.04

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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.