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Finding the Fourth Proportional to 70,700.20, 97,566.53 and 38,871.11

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Solution

The fourth proportional to 70,700.20, 97,566.53 and 38,871.11 is: 53,642.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,700.20 : 97,566.53 = 38,871.11 : x
  2. Step 2: Convert to fraction form
    70,700.20/97,566.53 = 38,871.11/x
  3. Step 3: Cross multiply
    70,700.20x = 97,566.53 × 38,871.11
  4. Step 4: Simplify right side
    70,700.20x = 3,792,519,369.51
  5. Step 5: Solve for x
    x = 3,792,519,369.51/70,700.20
  6. Step 6: Final answer
    x = 53,642.27

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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.