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Finding the Fourth Proportional to 70,480.76, 97,314.46 and 45,374

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Solution

The fourth proportional to 70,480.76, 97,314.46 and 45,374 is: 62,648.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,480.76 : 97,314.46 = 45,374 : x
  2. Step 2: Convert to fraction form
    70,480.76/97,314.46 = 45,374/x
  3. Step 3: Cross multiply
    70,480.76x = 97,314.46 × 45,374
  4. Step 4: Simplify right side
    70,480.76x = 4,415,546,308.04
  5. Step 5: Solve for x
    x = 4,415,546,308.04/70,480.76
  6. Step 6: Final answer
    x = 62,648.96

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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.