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Finding the Fourth Proportional to 68,059.80, 101,895.30 and 61,061.40

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Solution

The fourth proportional to 68,059.80, 101,895.30 and 61,061.40 is: 91,417.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,059.80 : 101,895.30 = 61,061.40 : x
  2. Step 2: Convert to fraction form
    68,059.80/101,895.30 = 61,061.40/x
  3. Step 3: Cross multiply
    68,059.80x = 101,895.30 × 61,061.40
  4. Step 4: Simplify right side
    68,059.80x = 6,221,869,671.42
  5. Step 5: Solve for x
    x = 6,221,869,671.42/68,059.80
  6. Step 6: Final answer
    x = 91,417.69

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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.