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Finding the Fourth Proportional to 161,103.72, 222,316.95 and 89,488.32

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Solution

The fourth proportional to 161,103.72, 222,316.95 and 89,488.32 is: 123,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,103.72 : 222,316.95 = 89,488.32 : x
  2. Step 2: Convert to fraction form
    161,103.72/222,316.95 = 89,488.32/x
  3. Step 3: Cross multiply
    161,103.72x = 222,316.95 × 89,488.32
  4. Step 4: Simplify right side
    161,103.72x = 19,894,770,363.02
  5. Step 5: Solve for x
    x = 19,894,770,363.02/161,103.72
  6. Step 6: Final answer
    x = 123,490.45

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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.