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Finding the Fourth Proportional to 113,616.83, 156,791.40 and 65,897.93

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Solution

The fourth proportional to 113,616.83, 156,791.40 and 65,897.93 is: 90,939.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,616.83 : 156,791.40 = 65,897.93 : x
  2. Step 2: Convert to fraction form
    113,616.83/156,791.40 = 65,897.93/x
  3. Step 3: Cross multiply
    113,616.83x = 156,791.40 × 65,897.93
  4. Step 4: Simplify right side
    113,616.83x = 10,332,228,701.80
  5. Step 5: Solve for x
    x = 10,332,228,701.80/113,616.83
  6. Step 6: Final answer
    x = 90,939.24

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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.