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Finding the Fourth Proportional to 70,516.77, 105,806.76 and 38,506.38

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Solution

The fourth proportional to 70,516.77, 105,806.76 and 38,506.38 is: 57,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,516.77 : 105,806.76 = 38,506.38 : x
  2. Step 2: Convert to fraction form
    70,516.77/105,806.76 = 38,506.38/x
  3. Step 3: Cross multiply
    70,516.77x = 105,806.76 × 38,506.38
  4. Step 4: Simplify right side
    70,516.77x = 4,074,235,307.13
  5. Step 5: Solve for x
    x = 4,074,235,307.13/70,516.77
  6. Step 6: Final answer
    x = 57,776.83

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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.