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Finding the Fourth Proportional to 315,697.32, 473,545.57 and 79,039.97

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Solution

The fourth proportional to 315,697.32, 473,545.57 and 79,039.97 is: 118,559.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,697.32 : 473,545.57 = 79,039.97 : x
  2. Step 2: Convert to fraction form
    315,697.32/473,545.57 = 79,039.97/x
  3. Step 3: Cross multiply
    315,697.32x = 473,545.57 × 79,039.97
  4. Step 4: Simplify right side
    315,697.32x = 37,429,028,632.70
  5. Step 5: Solve for x
    x = 37,429,028,632.70/315,697.32
  6. Step 6: Final answer
    x = 118,559.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.