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Finding the Fourth Proportional to 70,817.16, 97,728.33 and 38,986.59

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Solution

The fourth proportional to 70,817.16, 97,728.33 and 38,986.59 is: 53,801.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,817.16 : 97,728.33 = 38,986.59 : x
  2. Step 2: Convert to fraction form
    70,817.16/97,728.33 = 38,986.59/x
  3. Step 3: Cross multiply
    70,817.16x = 97,728.33 × 38,986.59
  4. Step 4: Simplify right side
    70,817.16x = 3,810,094,333.09
  5. Step 5: Solve for x
    x = 3,810,094,333.09/70,817.16
  6. Step 6: Final answer
    x = 53,801.85

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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.