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Finding the Fourth Proportional to 678,153.52, 935,854.28 and 376,347.52

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Solution

The fourth proportional to 678,153.52, 935,854.28 and 376,347.52 is: 519,360.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,153.52 : 935,854.28 = 376,347.52 : x
  2. Step 2: Convert to fraction form
    678,153.52/935,854.28 = 376,347.52/x
  3. Step 3: Cross multiply
    678,153.52x = 935,854.28 × 376,347.52
  4. Step 4: Simplify right side
    678,153.52x = 352,206,437,359.39
  5. Step 5: Solve for x
    x = 352,206,437,359.39/678,153.52
  6. Step 6: Final answer
    x = 519,360.92

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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.