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Finding the Fourth Proportional to 120,807.86, 166,702.66 and 70,536.02

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Solution

The fourth proportional to 120,807.86, 166,702.66 and 70,536.02 is: 97,332.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,807.86 : 166,702.66 = 70,536.02 : x
  2. Step 2: Convert to fraction form
    120,807.86/166,702.66 = 70,536.02/x
  3. Step 3: Cross multiply
    120,807.86x = 166,702.66 × 70,536.02
  4. Step 4: Simplify right side
    120,807.86x = 11,758,541,149.96
  5. Step 5: Solve for x
    x = 11,758,541,149.96/120,807.86
  6. Step 6: Final answer
    x = 97,332.59

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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.