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Finding the Fourth Proportional to 40,479.90, 55,862.16 and 22,574.93

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Solution

The fourth proportional to 40,479.90, 55,862.16 and 22,574.93 is: 31,153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,479.90 : 55,862.16 = 22,574.93 : x
  2. Step 2: Convert to fraction form
    40,479.90/55,862.16 = 22,574.93/x
  3. Step 3: Cross multiply
    40,479.90x = 55,862.16 × 22,574.93
  4. Step 4: Simplify right side
    40,479.90x = 1,261,084,144.79
  5. Step 5: Solve for x
    x = 1,261,084,144.79/40,479.90
  6. Step 6: Final answer
    x = 31,153.34

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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.