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Finding the Fourth Proportional to 70,939.53, 97,895.39 and 39,111.39

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Solution

The fourth proportional to 70,939.53, 97,895.39 and 39,111.39 is: 53,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,939.53 : 97,895.39 = 39,111.39 : x
  2. Step 2: Convert to fraction form
    70,939.53/97,895.39 = 39,111.39/x
  3. Step 3: Cross multiply
    70,939.53x = 97,895.39 × 39,111.39
  4. Step 4: Simplify right side
    70,939.53x = 3,828,824,581.94
  5. Step 5: Solve for x
    x = 3,828,824,581.94/70,939.53
  6. Step 6: Final answer
    x = 53,973.08

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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.