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Finding the Fourth Proportional to 70,963.88, 97,930.82 and 39,133.92

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Solution

The fourth proportional to 70,963.88, 97,930.82 and 39,133.92 is: 54,005.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,963.88 : 97,930.82 = 39,133.92 : x
  2. Step 2: Convert to fraction form
    70,963.88/97,930.82 = 39,133.92/x
  3. Step 3: Cross multiply
    70,963.88x = 97,930.82 × 39,133.92
  4. Step 4: Simplify right side
    70,963.88x = 3,832,416,875.41
  5. Step 5: Solve for x
    x = 3,832,416,875.41/70,963.88
  6. Step 6: Final answer
    x = 54,005.18

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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.