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Finding the Fourth Proportional to 312,476.19, 468,713.55 and 75,818.67

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Solution

The fourth proportional to 312,476.19, 468,713.55 and 75,818.67 is: 113,727.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,476.19 : 468,713.55 = 75,818.67 : x
  2. Step 2: Convert to fraction form
    312,476.19/468,713.55 = 75,818.67/x
  3. Step 3: Cross multiply
    312,476.19x = 468,713.55 × 75,818.67
  4. Step 4: Simplify right side
    312,476.19x = 35,537,237,971.98
  5. Step 5: Solve for x
    x = 35,537,237,971.98/312,476.19
  6. Step 6: Final answer
    x = 113,727.83

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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.