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Finding the Fourth Proportional to 468,821.70, 646,973.90 and 253,961.72

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Solution

The fourth proportional to 468,821.70, 646,973.90 and 253,961.72 is: 350,467.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,821.70 : 646,973.90 = 253,961.72 : x
  2. Step 2: Convert to fraction form
    468,821.70/646,973.90 = 253,961.72/x
  3. Step 3: Cross multiply
    468,821.70x = 646,973.90 × 253,961.72
  4. Step 4: Simplify right side
    468,821.70x = 164,306,599,934.43
  5. Step 5: Solve for x
    x = 164,306,599,934.43/468,821.70
  6. Step 6: Final answer
    x = 350,467.14

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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.