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Finding the Fourth Proportional to 197,700.57, 272,830.55 and 108,276.57

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Solution

The fourth proportional to 197,700.57, 272,830.55 and 108,276.57 is: 149,423.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,700.57 : 272,830.55 = 108,276.57 : x
  2. Step 2: Convert to fraction form
    197,700.57/272,830.55 = 108,276.57/x
  3. Step 3: Cross multiply
    197,700.57x = 272,830.55 × 108,276.57
  4. Step 4: Simplify right side
    197,700.57x = 29,541,155,603.83
  5. Step 5: Solve for x
    x = 29,541,155,603.83/197,700.57
  6. Step 6: Final answer
    x = 149,423.72

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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.