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Finding the Fourth Proportional to 70,531.85, 97,335.99 and 38,702.76

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Solution

The fourth proportional to 70,531.85, 97,335.99 and 38,702.76 is: 53,410.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,531.85 : 97,335.99 = 38,702.76 : x
  2. Step 2: Convert to fraction form
    70,531.85/97,335.99 = 38,702.76/x
  3. Step 3: Cross multiply
    70,531.85x = 97,335.99 × 38,702.76
  4. Step 4: Simplify right side
    70,531.85x = 3,767,171,460.33
  5. Step 5: Solve for x
    x = 3,767,171,460.33/70,531.85
  6. Step 6: Final answer
    x = 53,410.93

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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.