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Finding the Fourth Proportional to 96,427.68, 133,070.40 and 53,988

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Solution

The fourth proportional to 96,427.68, 133,070.40 and 53,988 is: 74,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,427.68 : 133,070.40 = 53,988 : x
  2. Step 2: Convert to fraction form
    96,427.68/133,070.40 = 53,988/x
  3. Step 3: Cross multiply
    96,427.68x = 133,070.40 × 53,988
  4. Step 4: Simplify right side
    96,427.68x = 7,184,204,755.20
  5. Step 5: Solve for x
    x = 7,184,204,755.20/96,427.68
  6. Step 6: Final answer
    x = 74,503.55

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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.