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Finding the Fourth Proportional to 98,958.52, 136,743.58 and 72,054.16

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Solution

The fourth proportional to 98,958.52, 136,743.58 and 72,054.16 is: 99,566.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,958.52 : 136,743.58 = 72,054.16 : x
  2. Step 2: Convert to fraction form
    98,958.52/136,743.58 = 72,054.16/x
  3. Step 3: Cross multiply
    98,958.52x = 136,743.58 × 72,054.16
  4. Step 4: Simplify right side
    98,958.52x = 9,852,943,792.29
  5. Step 5: Solve for x
    x = 9,852,943,792.29/98,958.52
  6. Step 6: Final answer
    x = 99,566.40

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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.