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Finding the Fourth Proportional to 70,606.84, 97,439.43 and 38,777.79

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Solution

The fourth proportional to 70,606.84, 97,439.43 and 38,777.79 is: 53,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,606.84 : 97,439.43 = 38,777.79 : x
  2. Step 2: Convert to fraction form
    70,606.84/97,439.43 = 38,777.79/x
  3. Step 3: Cross multiply
    70,606.84x = 97,439.43 × 38,777.79
  4. Step 4: Simplify right side
    70,606.84x = 3,778,485,607.91
  5. Step 5: Solve for x
    x = 3,778,485,607.91/70,606.84
  6. Step 6: Final answer
    x = 53,514.44

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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.