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Finding the Fourth Proportional to 94,807.76, 130,818.12 and 69,717.20

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Solution

The fourth proportional to 94,807.76, 130,818.12 and 69,717.20 is: 96,197.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,807.76 : 130,818.12 = 69,717.20 : x
  2. Step 2: Convert to fraction form
    94,807.76/130,818.12 = 69,717.20/x
  3. Step 3: Cross multiply
    94,807.76x = 130,818.12 × 69,717.20
  4. Step 4: Simplify right side
    94,807.76x = 9,120,273,035.66
  5. Step 5: Solve for x
    x = 9,120,273,035.66/94,807.76
  6. Step 6: Final answer
    x = 96,197.54

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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.