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Finding the Fourth Proportional to 527,221.67, 790,957.65 and 172,235.12

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Solution

The fourth proportional to 527,221.67, 790,957.65 and 172,235.12 is: 258,393.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,221.67 : 790,957.65 = 172,235.12 : x
  2. Step 2: Convert to fraction form
    527,221.67/790,957.65 = 172,235.12/x
  3. Step 3: Cross multiply
    527,221.67x = 790,957.65 × 172,235.12
  4. Step 4: Simplify right side
    527,221.67x = 136,230,685,762.67
  5. Step 5: Solve for x
    x = 136,230,685,762.67/527,221.67
  6. Step 6: Final answer
    x = 258,393.56

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1.5x scale

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.