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Finding the Fourth Proportional to 68,079.96, 93,883.32 and 64,143.36

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Solution

The fourth proportional to 68,079.96, 93,883.32 and 64,143.36 is: 88,454.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,079.96 : 93,883.32 = 64,143.36 : x
  2. Step 2: Convert to fraction form
    68,079.96/93,883.32 = 64,143.36/x
  3. Step 3: Cross multiply
    68,079.96x = 93,883.32 × 64,143.36
  4. Step 4: Simplify right side
    68,079.96x = 6,021,991,592.76
  5. Step 5: Solve for x
    x = 6,021,991,592.76/68,079.96
  6. Step 6: Final answer
    x = 88,454.69

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1.5x scale

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.