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Finding the Fourth Proportional to 98,745, 136,268.19 and 54,033

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Solution

The fourth proportional to 98,745, 136,268.19 and 54,033 is: 74,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,745 : 136,268.19 = 54,033 : x
  2. Step 2: Convert to fraction form
    98,745/136,268.19 = 54,033/x
  3. Step 3: Cross multiply
    98,745x = 136,268.19 × 54,033
  4. Step 4: Simplify right side
    98,745x = 7,362,979,110.27
  5. Step 5: Solve for x
    x = 7,362,979,110.27/98,745
  6. Step 6: Final answer
    x = 74,565.59

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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.