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Finding the Fourth Proportional to 683,940.44, 943,886.64 and 378,010.24

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Solution

The fourth proportional to 683,940.44, 943,886.64 and 378,010.24 is: 521,681.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,940.44 : 943,886.64 = 378,010.24 : x
  2. Step 2: Convert to fraction form
    683,940.44/943,886.64 = 378,010.24/x
  3. Step 3: Cross multiply
    683,940.44x = 943,886.64 × 378,010.24
  4. Step 4: Simplify right side
    683,940.44x = 356,798,815,319.19
  5. Step 5: Solve for x
    x = 356,798,815,319.19/683,940.44
  6. Step 6: Final answer
    x = 521,681.12

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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.