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Finding the Fourth Proportional to 68,913.66, 95,115.66 and 42,050.40

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Solution

The fourth proportional to 68,913.66, 95,115.66 and 42,050.40 is: 58,038.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,913.66 : 95,115.66 = 42,050.40 : x
  2. Step 2: Convert to fraction form
    68,913.66/95,115.66 = 42,050.40/x
  3. Step 3: Cross multiply
    68,913.66x = 95,115.66 × 42,050.40
  4. Step 4: Simplify right side
    68,913.66x = 3,999,651,549.26
  5. Step 5: Solve for x
    x = 3,999,651,549.26/68,913.66
  6. Step 6: Final answer
    x = 58,038.59

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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.