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Finding the Fourth Proportional to 126,805.68, 174,989.70 and 70,215.84

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Solution

The fourth proportional to 126,805.68, 174,989.70 and 70,215.84 is: 96,896.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,805.68 : 174,989.70 = 70,215.84 : x
  2. Step 2: Convert to fraction form
    126,805.68/174,989.70 = 70,215.84/x
  3. Step 3: Cross multiply
    126,805.68x = 174,989.70 × 70,215.84
  4. Step 4: Simplify right side
    126,805.68x = 12,287,048,776.85
  5. Step 5: Solve for x
    x = 12,287,048,776.85/126,805.68
  6. Step 6: Final answer
    x = 96,896.68

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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.