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Finding the Fourth Proportional to 65,913.52, 90,960.93 and 35,699.20

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Solution

The fourth proportional to 65,913.52, 90,960.93 and 35,699.20 is: 49,265.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,913.52 : 90,960.93 = 35,699.20 : x
  2. Step 2: Convert to fraction form
    65,913.52/90,960.93 = 35,699.20/x
  3. Step 3: Cross multiply
    65,913.52x = 90,960.93 × 35,699.20
  4. Step 4: Simplify right side
    65,913.52x = 3,247,232,432.26
  5. Step 5: Solve for x
    x = 3,247,232,432.26/65,913.52
  6. Step 6: Final answer
    x = 49,265.04

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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.