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Finding the Fourth Proportional to 70,911.94, 97,858.49 and 38,646.56

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Solution

The fourth proportional to 70,911.94, 97,858.49 and 38,646.56 is: 53,332.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,911.94 : 97,858.49 = 38,646.56 : x
  2. Step 2: Convert to fraction form
    70,911.94/97,858.49 = 38,646.56/x
  3. Step 3: Cross multiply
    70,911.94x = 97,858.49 × 38,646.56
  4. Step 4: Simplify right side
    70,911.94x = 3,781,894,005.29
  5. Step 5: Solve for x
    x = 3,781,894,005.29/70,911.94
  6. Step 6: Final answer
    x = 53,332.26

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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.