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Finding the Fourth Proportional to 70,966.88, 97,934.94 and 39,136.94

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Solution

The fourth proportional to 70,966.88, 97,934.94 and 39,136.94 is: 54,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,966.88 : 97,934.94 = 39,136.94 : x
  2. Step 2: Convert to fraction form
    70,966.88/97,934.94 = 39,136.94/x
  3. Step 3: Cross multiply
    70,966.88x = 97,934.94 × 39,136.94
  4. Step 4: Simplify right side
    70,966.88x = 3,832,873,870.68
  5. Step 5: Solve for x
    x = 3,832,873,870.68/70,966.88
  6. Step 6: Final answer
    x = 54,009.33

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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.