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Finding the Fourth Proportional to 123,767.75, 170,785.29 and 69,312.32

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Solution

The fourth proportional to 123,767.75, 170,785.29 and 69,312.32 is: 95,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,767.75 : 170,785.29 = 69,312.32 : x
  2. Step 2: Convert to fraction form
    123,767.75/170,785.29 = 69,312.32/x
  3. Step 3: Cross multiply
    123,767.75x = 170,785.29 × 69,312.32
  4. Step 4: Simplify right side
    123,767.75x = 11,837,524,671.77
  5. Step 5: Solve for x
    x = 11,837,524,671.77/123,767.75
  6. Step 6: Final answer
    x = 95,643.05

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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.