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Finding the Fourth Proportional to 40,502.80, 55,919.88 and 25,416.16

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Solution

The fourth proportional to 40,502.80, 55,919.88 and 25,416.16 is: 35,090.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,502.80 : 55,919.88 = 25,416.16 : x
  2. Step 2: Convert to fraction form
    40,502.80/55,919.88 = 25,416.16/x
  3. Step 3: Cross multiply
    40,502.80x = 55,919.88 × 25,416.16
  4. Step 4: Simplify right side
    40,502.80x = 1,421,268,617.26
  5. Step 5: Solve for x
    x = 1,421,268,617.26/40,502.80
  6. Step 6: Final answer
    x = 35,090.63

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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.