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Finding the Fourth Proportional to 69,931.79, 96,503.30 and 38,100.00

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Solution

The fourth proportional to 69,931.79, 96,503.30 and 38,100.00 is: 52,576.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,931.79 : 96,503.30 = 38,100.00 : x
  2. Step 2: Convert to fraction form
    69,931.79/96,503.30 = 38,100.00/x
  3. Step 3: Cross multiply
    69,931.79x = 96,503.30 × 38,100.00
  4. Step 4: Simplify right side
    69,931.79x = 3,676,776,044.26
  5. Step 5: Solve for x
    x = 3,676,776,044.26/69,931.79
  6. Step 6: Final answer
    x = 52,576.61

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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.