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Finding the Fourth Proportional to 123,653.52, 170,453.16 and 75,818.16

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Solution

The fourth proportional to 123,653.52, 170,453.16 and 75,818.16 is: 104,513.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,653.52 : 170,453.16 = 75,818.16 : x
  2. Step 2: Convert to fraction form
    123,653.52/170,453.16 = 75,818.16/x
  3. Step 3: Cross multiply
    123,653.52x = 170,453.16 × 75,818.16
  4. Step 4: Simplify right side
    123,653.52x = 12,923,444,957.39
  5. Step 5: Solve for x
    x = 12,923,444,957.39/123,653.52
  6. Step 6: Final answer
    x = 104,513.36

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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.