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Finding the Fourth Proportional to 678,059.07, 935,765.25 and 376,253.07

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Solution

The fourth proportional to 678,059.07, 935,765.25 and 376,253.07 is: 519,253.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,059.07 : 935,765.25 = 376,253.07 : x
  2. Step 2: Convert to fraction form
    678,059.07/935,765.25 = 376,253.07/x
  3. Step 3: Cross multiply
    678,059.07x = 935,765.25 × 376,253.07
  4. Step 4: Simplify right side
    678,059.07x = 352,084,548,111.82
  5. Step 5: Solve for x
    x = 352,084,548,111.82/678,059.07
  6. Step 6: Final answer
    x = 519,253.50

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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.