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Finding the Fourth Proportional to 123,873.36, 170,970.12 and 73,562.64

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Solution

The fourth proportional to 123,873.36, 170,970.12 and 73,562.64 is: 101,531.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,873.36 : 170,970.12 = 73,562.64 : x
  2. Step 2: Convert to fraction form
    123,873.36/170,970.12 = 73,562.64/x
  3. Step 3: Cross multiply
    123,873.36x = 170,970.12 × 73,562.64
  4. Step 4: Simplify right side
    123,873.36x = 12,577,013,388.32
  5. Step 5: Solve for x
    x = 12,577,013,388.32/123,873.36
  6. Step 6: Final answer
    x = 101,531.22

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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.