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Finding the Fourth Proportional to 99,599.84, 137,443.78 and 54,276.85

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Solution

The fourth proportional to 99,599.84, 137,443.78 and 54,276.85 is: 74,899.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,599.84 : 137,443.78 = 54,276.85 : x
  2. Step 2: Convert to fraction form
    99,599.84/137,443.78 = 54,276.85/x
  3. Step 3: Cross multiply
    99,599.84x = 137,443.78 × 54,276.85
  4. Step 4: Simplify right side
    99,599.84x = 7,460,015,159.11
  5. Step 5: Solve for x
    x = 7,460,015,159.11/99,599.84
  6. Step 6: Final answer
    x = 74,899.87

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1.5x scale

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.