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Finding the Fourth Proportional to 571,710.40, 856,951.20 and 216,587.20

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Solution

The fourth proportional to 571,710.40, 856,951.20 and 216,587.20 is: 324,648.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,710.40 : 856,951.20 = 216,587.20 : x
  2. Step 2: Convert to fraction form
    571,710.40/856,951.20 = 216,587.20/x
  3. Step 3: Cross multiply
    571,710.40x = 856,951.20 × 216,587.20
  4. Step 4: Simplify right side
    571,710.40x = 185,604,660,944.64
  5. Step 5: Solve for x
    x = 185,604,660,944.64/571,710.40
  6. Step 6: Final answer
    x = 324,648.04

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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.