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Finding the Fourth Proportional to 65,216.53, 89,993.19 and 37,988.38

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Solution

The fourth proportional to 65,216.53, 89,993.19 and 37,988.38 is: 52,420.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,216.53 : 89,993.19 = 37,988.38 : x
  2. Step 2: Convert to fraction form
    65,216.53/89,993.19 = 37,988.38/x
  3. Step 3: Cross multiply
    65,216.53x = 89,993.19 × 37,988.38
  4. Step 4: Simplify right side
    65,216.53x = 3,418,695,499.13
  5. Step 5: Solve for x
    x = 3,418,695,499.13/65,216.53
  6. Step 6: Final answer
    x = 52,420.69

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Half scale
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Double scale
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Similar ratio
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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.