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Finding the Fourth Proportional to 678,087.52, 935,804.50 and 376,281.52

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Solution

The fourth proportional to 678,087.52, 935,804.50 and 376,281.52 is: 519,292.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,087.52 : 935,804.50 = 376,281.52 : x
  2. Step 2: Convert to fraction form
    678,087.52/935,804.50 = 376,281.52/x
  3. Step 3: Cross multiply
    678,087.52x = 935,804.50 × 376,281.52
  4. Step 4: Simplify right side
    678,087.52x = 352,125,939,682.84
  5. Step 5: Solve for x
    x = 352,125,939,682.84/678,087.52
  6. Step 6: Final answer
    x = 519,292.76

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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.