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Finding the Fourth Proportional to 153,864.10, 215,876.30 and 153,864.10

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Solution

The fourth proportional to 153,864.10, 215,876.30 and 153,864.10 is: 215,876.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,864.10 : 215,876.30 = 153,864.10 : x
  2. Step 2: Convert to fraction form
    153,864.10/215,876.30 = 153,864.10/x
  3. Step 3: Cross multiply
    153,864.10x = 215,876.30 × 153,864.10
  4. Step 4: Simplify right side
    153,864.10x = 33,215,612,610.83
  5. Step 5: Solve for x
    x = 33,215,612,610.83/153,864.10
  6. Step 6: Final answer
    x = 215,876.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.