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Finding the Fourth Proportional to 99,605.19, 137,455.16 and 54,893.19

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Solution

The fourth proportional to 99,605.19, 137,455.16 and 54,893.19 is: 75,752.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,605.19 : 137,455.16 = 54,893.19 : x
  2. Step 2: Convert to fraction form
    99,605.19/137,455.16 = 54,893.19/x
  3. Step 3: Cross multiply
    99,605.19x = 137,455.16 × 54,893.19
  4. Step 4: Simplify right side
    99,605.19x = 7,545,352,214.36
  5. Step 5: Solve for x
    x = 7,545,352,214.36/99,605.19
  6. Step 6: Final answer
    x = 75,752.60

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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.