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Finding the Fourth Proportional to 99,547.49, 137,375.72 and 59,262.65

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Solution

The fourth proportional to 99,547.49, 137,375.72 and 59,262.65 is: 81,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,547.49 : 137,375.72 = 59,262.65 : x
  2. Step 2: Convert to fraction form
    99,547.49/137,375.72 = 59,262.65/x
  3. Step 3: Cross multiply
    99,547.49x = 137,375.72 × 59,262.65
  4. Step 4: Simplify right side
    99,547.49x = 8,141,249,212.86
  5. Step 5: Solve for x
    x = 8,141,249,212.86/99,547.49
  6. Step 6: Final answer
    x = 81,782.57

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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.