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Finding the Fourth Proportional to 468,219.92, 646,142.47 and 253,359.90

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Solution

The fourth proportional to 468,219.92, 646,142.47 and 253,359.90 is: 349,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,219.92 : 646,142.47 = 253,359.90 : x
  2. Step 2: Convert to fraction form
    468,219.92/646,142.47 = 253,359.90/x
  3. Step 3: Cross multiply
    468,219.92x = 646,142.47 × 253,359.90
  4. Step 4: Simplify right side
    468,219.92x = 163,706,590,951.55
  5. Step 5: Solve for x
    x = 163,706,590,951.55/468,219.92
  6. Step 6: Final answer
    x = 349,636.11

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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.