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Finding the Fourth Proportional to 70,913.65, 97,859.57 and 38,648.56

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Solution

The fourth proportional to 70,913.65, 97,859.57 and 38,648.56 is: 53,334.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,913.65 : 97,859.57 = 38,648.56 : x
  2. Step 2: Convert to fraction form
    70,913.65/97,859.57 = 38,648.56/x
  3. Step 3: Cross multiply
    70,913.65x = 97,859.57 × 38,648.56
  4. Step 4: Simplify right side
    70,913.65x = 3,782,131,559.34
  5. Step 5: Solve for x
    x = 3,782,131,559.34/70,913.65
  6. Step 6: Final answer
    x = 53,334.32

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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.