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Finding the Fourth Proportional to 70,685.08, 105,888.90 and 41,040.76

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Solution

The fourth proportional to 70,685.08, 105,888.90 and 41,040.76 is: 61,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,685.08 : 105,888.90 = 41,040.76 : x
  2. Step 2: Convert to fraction form
    70,685.08/105,888.90 = 41,040.76/x
  3. Step 3: Cross multiply
    70,685.08x = 105,888.90 × 41,040.76
  4. Step 4: Simplify right side
    70,685.08x = 4,345,760,931.56
  5. Step 5: Solve for x
    x = 4,345,760,931.56/70,685.08
  6. Step 6: Final answer
    x = 61,480.60

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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.