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Finding the Fourth Proportional to 175,456.71, 242,153.96 and 98,991.50

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Solution

The fourth proportional to 175,456.71, 242,153.96 and 98,991.50 is: 136,621.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,456.71 : 242,153.96 = 98,991.50 : x
  2. Step 2: Convert to fraction form
    175,456.71/242,153.96 = 98,991.50/x
  3. Step 3: Cross multiply
    175,456.71x = 242,153.96 × 98,991.50
  4. Step 4: Simplify right side
    175,456.71x = 23,971,182,252.63
  5. Step 5: Solve for x
    x = 23,971,182,252.63/175,456.71
  6. Step 6: Final answer
    x = 136,621.63

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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.