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Finding the Fourth Proportional to 54,189.96, 74,615.96 and 47,437.80

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Solution

The fourth proportional to 54,189.96, 74,615.96 and 47,437.80 is: 65,318.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,189.96 : 74,615.96 = 47,437.80 : x
  2. Step 2: Convert to fraction form
    54,189.96/74,615.96 = 47,437.80/x
  3. Step 3: Cross multiply
    54,189.96x = 74,615.96 × 47,437.80
  4. Step 4: Simplify right side
    54,189.96x = 3,539,616,987.29
  5. Step 5: Solve for x
    x = 3,539,616,987.29/54,189.96
  6. Step 6: Final answer
    x = 65,318.69

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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.