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Finding the Fourth Proportional to 104,876.87, 144,683.96 and 70,872.95

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Solution

The fourth proportional to 104,876.87, 144,683.96 and 70,872.95 is: 97,773.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,876.87 : 144,683.96 = 70,872.95 : x
  2. Step 2: Convert to fraction form
    104,876.87/144,683.96 = 70,872.95/x
  3. Step 3: Cross multiply
    104,876.87x = 144,683.96 × 70,872.95
  4. Step 4: Simplify right side
    104,876.87x = 10,254,177,985.10
  5. Step 5: Solve for x
    x = 10,254,177,985.10/104,876.87
  6. Step 6: Final answer
    x = 97,773.50

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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.