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Finding the Fourth Proportional to 54,361.52, 74,987.04 and 34,186.40

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Solution

The fourth proportional to 54,361.52, 74,987.04 and 34,186.40 is: 47,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,361.52 : 74,987.04 = 34,186.40 : x
  2. Step 2: Convert to fraction form
    54,361.52/74,987.04 = 34,186.40/x
  3. Step 3: Cross multiply
    54,361.52x = 74,987.04 × 34,186.40
  4. Step 4: Simplify right side
    54,361.52x = 2,563,536,944.26
  5. Step 5: Solve for x
    x = 2,563,536,944.26/54,361.52
  6. Step 6: Final answer
    x = 47,157.20

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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.