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Finding the Fourth Proportional to 416,791.59, 575,140.60 and 253,425.40

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Solution

The fourth proportional to 416,791.59, 575,140.60 and 253,425.40 is: 349,707.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,791.59 : 575,140.60 = 253,425.40 : x
  2. Step 2: Convert to fraction form
    416,791.59/575,140.60 = 253,425.40/x
  3. Step 3: Cross multiply
    416,791.59x = 575,140.60 × 253,425.40
  4. Step 4: Simplify right side
    416,791.59x = 145,755,236,611.24
  5. Step 5: Solve for x
    x = 145,755,236,611.24/416,791.59
  6. Step 6: Final answer
    x = 349,707.72

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1.5x scale

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.