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Finding the Fourth Proportional to 70,443.54, 97,211.16 and 38,612.43

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Solution

The fourth proportional to 70,443.54, 97,211.16 and 38,612.43 is: 53,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,443.54 : 97,211.16 = 38,612.43 : x
  2. Step 2: Convert to fraction form
    70,443.54/97,211.16 = 38,612.43/x
  3. Step 3: Cross multiply
    70,443.54x = 97,211.16 × 38,612.43
  4. Step 4: Simplify right side
    70,443.54x = 3,753,559,110.72
  5. Step 5: Solve for x
    x = 3,753,559,110.72/70,443.54
  6. Step 6: Final answer
    x = 53,284.65

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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.