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Finding the Fourth Proportional to 70,057.86, 96,681.98 and 39,847.53

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Solution

The fourth proportional to 70,057.86, 96,681.98 and 39,847.53 is: 54,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,057.86 : 96,681.98 = 39,847.53 : x
  2. Step 2: Convert to fraction form
    70,057.86/96,681.98 = 39,847.53/x
  3. Step 3: Cross multiply
    70,057.86x = 96,681.98 × 39,847.53
  4. Step 4: Simplify right side
    70,057.86x = 3,852,538,048.70
  5. Step 5: Solve for x
    x = 3,852,538,048.70/70,057.86
  6. Step 6: Final answer
    x = 54,990.80

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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.