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Finding the Fourth Proportional to 99,598.58, 137,444.79 and 54,278.54

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Solution

The fourth proportional to 99,598.58, 137,444.79 and 54,278.54 is: 74,903.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,598.58 : 137,444.79 = 54,278.54 : x
  2. Step 2: Convert to fraction form
    99,598.58/137,444.79 = 54,278.54/x
  3. Step 3: Cross multiply
    99,598.58x = 137,444.79 × 54,278.54
  4. Step 4: Simplify right side
    99,598.58x = 7,460,302,531.81
  5. Step 5: Solve for x
    x = 7,460,302,531.81/99,598.58
  6. Step 6: Final answer
    x = 74,903.70

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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.