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Finding the Fourth Proportional to 65,651.76, 90,596.16 and 38,795.52

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Solution

The fourth proportional to 65,651.76, 90,596.16 and 38,795.52 is: 53,535.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,651.76 : 90,596.16 = 38,795.52 : x
  2. Step 2: Convert to fraction form
    65,651.76/90,596.16 = 38,795.52/x
  3. Step 3: Cross multiply
    65,651.76x = 90,596.16 × 38,795.52
  4. Step 4: Simplify right side
    65,651.76x = 3,514,725,137.20
  5. Step 5: Solve for x
    x = 3,514,725,137.20/65,651.76
  6. Step 6: Final answer
    x = 53,535.89

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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.