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Finding the Fourth Proportional to 677,870.73, 935,430.30 and 371,939.49

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Solution

The fourth proportional to 677,870.73, 935,430.30 and 371,939.49 is: 513,259.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,870.73 : 935,430.30 = 371,939.49 : x
  2. Step 2: Convert to fraction form
    677,870.73/935,430.30 = 371,939.49/x
  3. Step 3: Cross multiply
    677,870.73x = 935,430.30 × 371,939.49
  4. Step 4: Simplify right side
    677,870.73x = 347,923,468,712.55
  5. Step 5: Solve for x
    x = 347,923,468,712.55/677,870.73
  6. Step 6: Final answer
    x = 513,259.32

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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.