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Finding the Fourth Proportional to 99,172.58, 136,854.41 and 53,849.58

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Solution

The fourth proportional to 99,172.58, 136,854.41 and 53,849.58 is: 74,310.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,172.58 : 136,854.41 = 53,849.58 : x
  2. Step 2: Convert to fraction form
    99,172.58/136,854.41 = 53,849.58/x
  3. Step 3: Cross multiply
    99,172.58x = 136,854.41 × 53,849.58
  4. Step 4: Simplify right side
    99,172.58x = 7,369,552,499.65
  5. Step 5: Solve for x
    x = 7,369,552,499.65/99,172.58
  6. Step 6: Final answer
    x = 74,310.38

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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.