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Finding the Fourth Proportional to 561,045.06, 774,213.06 and 319,326.87

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Solution

The fourth proportional to 561,045.06, 774,213.06 and 319,326.87 is: 440,654.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,045.06 : 774,213.06 = 319,326.87 : x
  2. Step 2: Convert to fraction form
    561,045.06/774,213.06 = 319,326.87/x
  3. Step 3: Cross multiply
    561,045.06x = 774,213.06 × 319,326.87
  4. Step 4: Simplify right side
    561,045.06x = 247,227,033,162.92
  5. Step 5: Solve for x
    x = 247,227,033,162.92/561,045.06
  6. Step 6: Final answer
    x = 440,654.50

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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.