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Finding the Fourth Proportional to 571,695.54, 788,920.00 and 317,070.42

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Solution

The fourth proportional to 571,695.54, 788,920.00 and 317,070.42 is: 437,546.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,695.54 : 788,920.00 = 317,070.42 : x
  2. Step 2: Convert to fraction form
    571,695.54/788,920.00 = 317,070.42/x
  3. Step 3: Cross multiply
    571,695.54x = 788,920.00 × 317,070.42
  4. Step 4: Simplify right side
    571,695.54x = 250,143,193,778.80
  5. Step 5: Solve for x
    x = 250,143,193,778.80/571,695.54
  6. Step 6: Final answer
    x = 437,546.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.