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Finding the Fourth Proportional to 475,695.54, 712,143.63 and 317,531.70

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Solution

The fourth proportional to 475,695.54, 712,143.63 and 317,531.70 is: 475,363.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,695.54 : 712,143.63 = 317,531.70 : x
  2. Step 2: Convert to fraction form
    475,695.54/712,143.63 = 317,531.70/x
  3. Step 3: Cross multiply
    475,695.54x = 712,143.63 × 317,531.70
  4. Step 4: Simplify right side
    475,695.54x = 226,128,177,478.07
  5. Step 5: Solve for x
    x = 226,128,177,478.07/475,695.54
  6. Step 6: Final answer
    x = 475,363.25

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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.