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Finding the Fourth Proportional to 527,103.88, 790,732.86 and 153,078.28

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Solution

The fourth proportional to 527,103.88, 790,732.86 and 153,078.28 is: 229,639.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,103.88 : 790,732.86 = 153,078.28 : x
  2. Step 2: Convert to fraction form
    527,103.88/790,732.86 = 153,078.28/x
  3. Step 3: Cross multiply
    527,103.88x = 790,732.86 × 153,078.28
  4. Step 4: Simplify right side
    527,103.88x = 121,044,026,148.28
  5. Step 5: Solve for x
    x = 121,044,026,148.28/527,103.88
  6. Step 6: Final answer
    x = 229,639.79

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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.