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Finding the Fourth Proportional to 60,085.36, 90,128.76 and 36,398.08

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Solution

The fourth proportional to 60,085.36, 90,128.76 and 36,398.08 is: 54,597.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,085.36 : 90,128.76 = 36,398.08 : x
  2. Step 2: Convert to fraction form
    60,085.36/90,128.76 = 36,398.08/x
  3. Step 3: Cross multiply
    60,085.36x = 90,128.76 × 36,398.08
  4. Step 4: Simplify right side
    60,085.36x = 3,280,513,816.78
  5. Step 5: Solve for x
    x = 3,280,513,816.78/60,085.36
  6. Step 6: Final answer
    x = 54,597.56

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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.