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Finding the Fourth Proportional to 99,602.66, 137,447.66 and 54,279.67

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Solution

The fourth proportional to 99,602.66, 137,447.66 and 54,279.67 is: 74,903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,602.66 : 137,447.66 = 54,279.67 : x
  2. Step 2: Convert to fraction form
    99,602.66/137,447.66 = 54,279.67/x
  3. Step 3: Cross multiply
    99,602.66x = 137,447.66 × 54,279.67
  4. Step 4: Simplify right side
    99,602.66x = 7,460,613,988.75
  5. Step 5: Solve for x
    x = 7,460,613,988.75/99,602.66
  6. Step 6: Final answer
    x = 74,903.76

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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.