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Finding the Fourth Proportional to 527,661.36, 791,602.92 and 172,647.72

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Solution

The fourth proportional to 527,661.36, 791,602.92 and 172,647.72 is: 259,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,661.36 : 791,602.92 = 172,647.72 : x
  2. Step 2: Convert to fraction form
    527,661.36/791,602.92 = 172,647.72/x
  3. Step 3: Cross multiply
    527,661.36x = 791,602.92 × 172,647.72
  4. Step 4: Simplify right side
    527,661.36x = 136,668,439,283.34
  5. Step 5: Solve for x
    x = 136,668,439,283.34/527,661.36
  6. Step 6: Final answer
    x = 259,007.86

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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.