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Finding the Fourth Proportional to 64,686.53, 89,265.08 and 36,005.24

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Solution

The fourth proportional to 64,686.53, 89,265.08 and 36,005.24 is: 49,685.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,686.53 : 89,265.08 = 36,005.24 : x
  2. Step 2: Convert to fraction form
    64,686.53/89,265.08 = 36,005.24/x
  3. Step 3: Cross multiply
    64,686.53x = 89,265.08 × 36,005.24
  4. Step 4: Simplify right side
    64,686.53x = 3,214,010,272.71
  5. Step 5: Solve for x
    x = 3,214,010,272.71/64,686.53
  6. Step 6: Final answer
    x = 49,685.93

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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.