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Finding the Fourth Proportional to 102,653.30, 153,979.95 and 97,841.90

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Solution

The fourth proportional to 102,653.30, 153,979.95 and 97,841.90 is: 146,762.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,653.30 : 153,979.95 = 97,841.90 : x
  2. Step 2: Convert to fraction form
    102,653.30/153,979.95 = 97,841.90/x
  3. Step 3: Cross multiply
    102,653.30x = 153,979.95 × 97,841.90
  4. Step 4: Simplify right side
    102,653.30x = 15,065,690,869.91
  5. Step 5: Solve for x
    x = 15,065,690,869.91/102,653.30
  6. Step 6: Final answer
    x = 146,762.85

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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.