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Finding the Fourth Proportional to 65,533.52, 90,436.16 and 37,239.20

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Solution

The fourth proportional to 65,533.52, 90,436.16 and 37,239.20 is: 51,390.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,533.52 : 90,436.16 = 37,239.20 : x
  2. Step 2: Convert to fraction form
    65,533.52/90,436.16 = 37,239.20/x
  3. Step 3: Cross multiply
    65,533.52x = 90,436.16 × 37,239.20
  4. Step 4: Simplify right side
    65,533.52x = 3,367,770,249.47
  5. Step 5: Solve for x
    x = 3,367,770,249.47/65,533.52
  6. Step 6: Final answer
    x = 51,390.04

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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.