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Finding the Fourth Proportional to 92,790.92, 127,972.50 and 64,564.04

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Solution

The fourth proportional to 92,790.92, 127,972.50 and 64,564.04 is: 89,043.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,790.92 : 127,972.50 = 64,564.04 : x
  2. Step 2: Convert to fraction form
    92,790.92/127,972.50 = 64,564.04/x
  3. Step 3: Cross multiply
    92,790.92x = 127,972.50 × 64,564.04
  4. Step 4: Simplify right side
    92,790.92x = 8,262,421,608.90
  5. Step 5: Solve for x
    x = 8,262,421,608.90/92,790.92
  6. Step 6: Final answer
    x = 89,043.43

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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.