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Finding the Fourth Proportional to 683,947.66, 943,818.45 and 378,008.22

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Solution

The fourth proportional to 683,947.66, 943,818.45 and 378,008.22 is: 521,635.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,947.66 : 943,818.45 = 378,008.22 : x
  2. Step 2: Convert to fraction form
    683,947.66/943,818.45 = 378,008.22/x
  3. Step 3: Cross multiply
    683,947.66x = 943,818.45 × 378,008.22
  4. Step 4: Simplify right side
    683,947.66x = 356,771,132,287.66
  5. Step 5: Solve for x
    x = 356,771,132,287.66/683,947.66
  6. Step 6: Final answer
    x = 521,635.14

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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.