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Finding the Fourth Proportional to 116,040.48, 160,136.40 and 65,749.28

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Solution

The fourth proportional to 116,040.48, 160,136.40 and 65,749.28 is: 90,734.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,040.48 : 160,136.40 = 65,749.28 : x
  2. Step 2: Convert to fraction form
    116,040.48/160,136.40 = 65,749.28/x
  3. Step 3: Cross multiply
    116,040.48x = 160,136.40 × 65,749.28
  4. Step 4: Simplify right side
    116,040.48x = 10,528,853,001.79
  5. Step 5: Solve for x
    x = 10,528,853,001.79/116,040.48
  6. Step 6: Final answer
    x = 90,734.31

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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.