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Finding the Fourth Proportional to 64,685.01, 89,228.85 and 38,836.95

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Solution

The fourth proportional to 64,685.01, 89,228.85 and 38,836.95 is: 53,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,685.01 : 89,228.85 = 38,836.95 : x
  2. Step 2: Convert to fraction form
    64,685.01/89,228.85 = 38,836.95/x
  3. Step 3: Cross multiply
    64,685.01x = 89,228.85 × 38,836.95
  4. Step 4: Simplify right side
    64,685.01x = 3,465,376,386.01
  5. Step 5: Solve for x
    x = 3,465,376,386.01/64,685.01
  6. Step 6: Final answer
    x = 53,573.10

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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.