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Finding the Fourth Proportional to 70,130.32, 96,775.92 and 39,923.02

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Solution

The fourth proportional to 70,130.32, 96,775.92 and 39,923.02 is: 55,091.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,130.32 : 96,775.92 = 39,923.02 : x
  2. Step 2: Convert to fraction form
    70,130.32/96,775.92 = 39,923.02/x
  3. Step 3: Cross multiply
    70,130.32x = 96,775.92 × 39,923.02
  4. Step 4: Simplify right side
    70,130.32x = 3,863,586,989.68
  5. Step 5: Solve for x
    x = 3,863,586,989.68/70,130.32
  6. Step 6: Final answer
    x = 55,091.54

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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.