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Finding the Fourth Proportional to 678,058.57, 935,764.56 and 376,252.57

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Solution

The fourth proportional to 678,058.57, 935,764.56 and 376,252.57 is: 519,252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,058.57 : 935,764.56 = 376,252.57 : x
  2. Step 2: Convert to fraction form
    678,058.57/935,764.56 = 376,252.57/x
  3. Step 3: Cross multiply
    678,058.57x = 935,764.56 × 376,252.57
  4. Step 4: Simplify right side
    678,058.57x = 352,083,820,614.92
  5. Step 5: Solve for x
    x = 352,083,820,614.92/678,058.57
  6. Step 6: Final answer
    x = 519,252.81

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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.