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Finding the Fourth Proportional to 77,571.96, 107,060.88 and 47,374.65

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Solution

The fourth proportional to 77,571.96, 107,060.88 and 47,374.65 is: 65,384.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,571.96 : 107,060.88 = 47,374.65 : x
  2. Step 2: Convert to fraction form
    77,571.96/107,060.88 = 47,374.65/x
  3. Step 3: Cross multiply
    77,571.96x = 107,060.88 × 47,374.65
  4. Step 4: Simplify right side
    77,571.96x = 5,071,971,718.69
  5. Step 5: Solve for x
    x = 5,071,971,718.69/77,571.96
  6. Step 6: Final answer
    x = 65,384.09

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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.