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Finding the Fourth Proportional to 70,718.88, 97,594.56 and 38,890.24

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Solution

The fourth proportional to 70,718.88, 97,594.56 and 38,890.24 is: 53,669.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,718.88 : 97,594.56 = 38,890.24 : x
  2. Step 2: Convert to fraction form
    70,718.88/97,594.56 = 38,890.24/x
  3. Step 3: Cross multiply
    70,718.88x = 97,594.56 × 38,890.24
  4. Step 4: Simplify right side
    70,718.88x = 3,795,475,861.09
  5. Step 5: Solve for x
    x = 3,795,475,861.09/70,718.88
  6. Step 6: Final answer
    x = 53,669.91

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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.