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Finding the Fourth Proportional to 86,911.28, 119,937.54 and 47,167.28

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Solution

The fourth proportional to 86,911.28, 119,937.54 and 47,167.28 is: 65,090.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,911.28 : 119,937.54 = 47,167.28 : x
  2. Step 2: Convert to fraction form
    86,911.28/119,937.54 = 47,167.28/x
  3. Step 3: Cross multiply
    86,911.28x = 119,937.54 × 47,167.28
  4. Step 4: Simplify right side
    86,911.28x = 5,657,127,531.69
  5. Step 5: Solve for x
    x = 5,657,127,531.69/86,911.28
  6. Step 6: Final answer
    x = 65,090.83

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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.