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Finding the Fourth Proportional to 86,853.40, 130,061.40 and 82,916.80

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Solution

The fourth proportional to 86,853.40, 130,061.40 and 82,916.80 is: 124,166.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,853.40 : 130,061.40 = 82,916.80 : x
  2. Step 2: Convert to fraction form
    86,853.40/130,061.40 = 82,916.80/x
  3. Step 3: Cross multiply
    86,853.40x = 130,061.40 × 82,916.80
  4. Step 4: Simplify right side
    86,853.40x = 10,784,275,091.52
  5. Step 5: Solve for x
    x = 10,784,275,091.52/86,853.40
  6. Step 6: Final answer
    x = 124,166.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.