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Finding the Fourth Proportional to 70,438.04, 97,203.92 and 38,606.86

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Solution

The fourth proportional to 70,438.04, 97,203.92 and 38,606.86 is: 53,277.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,438.04 : 97,203.92 = 38,606.86 : x
  2. Step 2: Convert to fraction form
    70,438.04/97,203.92 = 38,606.86/x
  3. Step 3: Cross multiply
    70,438.04x = 97,203.92 × 38,606.86
  4. Step 4: Simplify right side
    70,438.04x = 3,752,738,059.36
  5. Step 5: Solve for x
    x = 3,752,738,059.36/70,438.04
  6. Step 6: Final answer
    x = 53,277.15

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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.