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Finding the Fourth Proportional to 64,778.34, 89,387.91 and 36,096.78

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Solution

The fourth proportional to 64,778.34, 89,387.91 and 36,096.78 is: 49,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,778.34 : 89,387.91 = 36,096.78 : x
  2. Step 2: Convert to fraction form
    64,778.34/89,387.91 = 36,096.78/x
  3. Step 3: Cross multiply
    64,778.34x = 89,387.91 × 36,096.78
  4. Step 4: Simplify right side
    64,778.34x = 3,226,615,721.93
  5. Step 5: Solve for x
    x = 3,226,615,721.93/64,778.34
  6. Step 6: Final answer
    x = 49,810.10

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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.