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Finding the Fourth Proportional to 70,428.52, 97,148.18 and 57,526.54

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Solution

The fourth proportional to 70,428.52, 97,148.18 and 57,526.54 is: 79,351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,428.52 : 97,148.18 = 57,526.54 : x
  2. Step 2: Convert to fraction form
    70,428.52/97,148.18 = 57,526.54/x
  3. Step 3: Cross multiply
    70,428.52x = 97,148.18 × 57,526.54
  4. Step 4: Simplify right side
    70,428.52x = 5,588,598,786.51
  5. Step 5: Solve for x
    x = 5,588,598,786.51/70,428.52
  6. Step 6: Final answer
    x = 79,351.36

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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.