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Finding the Fourth Proportional to 64,894.60, 89,573.70 and 38,042.92

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Solution

The fourth proportional to 64,894.60, 89,573.70 and 38,042.92 is: 52,510.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,894.60 : 89,573.70 = 38,042.92 : x
  2. Step 2: Convert to fraction form
    64,894.60/89,573.70 = 38,042.92/x
  3. Step 3: Cross multiply
    64,894.60x = 89,573.70 × 38,042.92
  4. Step 4: Simplify right side
    64,894.60x = 3,407,645,103.20
  5. Step 5: Solve for x
    x = 3,407,645,103.20/64,894.60
  6. Step 6: Final answer
    x = 52,510.46

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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.