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Finding the Fourth Proportional to 289,663.32, 399,734.46 and 168,876.12

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Solution

The fourth proportional to 289,663.32, 399,734.46 and 168,876.12 is: 233,048.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,663.32 : 399,734.46 = 168,876.12 : x
  2. Step 2: Convert to fraction form
    289,663.32/399,734.46 = 168,876.12/x
  3. Step 3: Cross multiply
    289,663.32x = 399,734.46 × 168,876.12
  4. Step 4: Simplify right side
    289,663.32x = 67,505,604,635.10
  5. Step 5: Solve for x
    x = 67,505,604,635.10/289,663.32
  6. Step 6: Final answer
    x = 233,048.51

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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.