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Finding the Fourth Proportional to 125,399.64, 173,053.62 and 68,816.28

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Solution

The fourth proportional to 125,399.64, 173,053.62 and 68,816.28 is: 94,967.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,399.64 : 173,053.62 = 68,816.28 : x
  2. Step 2: Convert to fraction form
    125,399.64/173,053.62 = 68,816.28/x
  3. Step 3: Cross multiply
    125,399.64x = 173,053.62 × 68,816.28
  4. Step 4: Simplify right side
    125,399.64x = 11,908,906,368.93
  5. Step 5: Solve for x
    x = 11,908,906,368.93/125,399.64
  6. Step 6: Final answer
    x = 94,967.63

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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.