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Finding the Fourth Proportional to 353,172.47, 529,758.71 and 103,854.47

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Solution

The fourth proportional to 353,172.47, 529,758.71 and 103,854.47 is: 155,781.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,172.47 : 529,758.71 = 103,854.47 : x
  2. Step 2: Convert to fraction form
    353,172.47/529,758.71 = 103,854.47/x
  3. Step 3: Cross multiply
    353,172.47x = 529,758.71 × 103,854.47
  4. Step 4: Simplify right side
    353,172.47x = 55,017,811,638.97
  5. Step 5: Solve for x
    x = 55,017,811,638.97/353,172.47
  6. Step 6: Final answer
    x = 155,781.71

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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.