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Finding the Fourth Proportional to 29,415.79, 40,594.06 and 15,987.08

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Solution

The fourth proportional to 29,415.79, 40,594.06 and 15,987.08 is: 22,062.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,415.79 : 40,594.06 = 15,987.08 : x
  2. Step 2: Convert to fraction form
    29,415.79/40,594.06 = 15,987.08/x
  3. Step 3: Cross multiply
    29,415.79x = 40,594.06 × 15,987.08
  4. Step 4: Simplify right side
    29,415.79x = 648,980,626.20
  5. Step 5: Solve for x
    x = 648,980,626.20/29,415.79
  6. Step 6: Final answer
    x = 22,062.32

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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.