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Finding the Fourth Proportional to 65,693.19, 90,656.70 and 37,398.88

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Solution

The fourth proportional to 65,693.19, 90,656.70 and 37,398.88 is: 51,610.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,693.19 : 90,656.70 = 37,398.88 : x
  2. Step 2: Convert to fraction form
    65,693.19/90,656.70 = 37,398.88/x
  3. Step 3: Cross multiply
    65,693.19x = 90,656.70 × 37,398.88
  4. Step 4: Simplify right side
    65,693.19x = 3,390,458,591.21
  5. Step 5: Solve for x
    x = 3,390,458,591.21/65,693.19
  6. Step 6: Final answer
    x = 51,610.50

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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.