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Finding the Fourth Proportional to 70,548.96, 97,357.32 and 38,718.40

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Solution

The fourth proportional to 70,548.96, 97,357.32 and 38,718.40 is: 53,431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,548.96 : 97,357.32 = 38,718.40 : x
  2. Step 2: Convert to fraction form
    70,548.96/97,357.32 = 38,718.40/x
  3. Step 3: Cross multiply
    70,548.96x = 97,357.32 × 38,718.40
  4. Step 4: Simplify right side
    70,548.96x = 3,769,519,658.69
  5. Step 5: Solve for x
    x = 3,769,519,658.69/70,548.96
  6. Step 6: Final answer
    x = 53,431.26

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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.