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Finding the Fourth Proportional to 191,632.84, 287,343.45 and 88,938.20

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Solution

The fourth proportional to 191,632.84, 287,343.45 and 88,938.20 is: 133,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,632.84 : 287,343.45 = 88,938.20 : x
  2. Step 2: Convert to fraction form
    191,632.84/287,343.45 = 88,938.20/x
  3. Step 3: Cross multiply
    191,632.84x = 287,343.45 × 88,938.20
  4. Step 4: Simplify right side
    191,632.84x = 25,555,809,943.15
  5. Step 5: Solve for x
    x = 25,555,809,943.15/191,632.84
  6. Step 6: Final answer
    x = 133,358.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.