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Finding the Fourth Proportional to 104,061.81, 156,029.51 and 40,806.15

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Solution

The fourth proportional to 104,061.81, 156,029.51 and 40,806.15 is: 61,184.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,061.81 : 156,029.51 = 40,806.15 : x
  2. Step 2: Convert to fraction form
    104,061.81/156,029.51 = 40,806.15/x
  3. Step 3: Cross multiply
    104,061.81x = 156,029.51 × 40,806.15
  4. Step 4: Simplify right side
    104,061.81x = 6,366,963,385.46
  5. Step 5: Solve for x
    x = 6,366,963,385.46/104,061.81
  6. Step 6: Final answer
    x = 61,184.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.