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Finding the Fourth Proportional to 92,976.65, 139,482.89 and 39,667.71

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Solution

The fourth proportional to 92,976.65, 139,482.89 and 39,667.71 is: 59,509.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,976.65 : 139,482.89 = 39,667.71 : x
  2. Step 2: Convert to fraction form
    92,976.65/139,482.89 = 39,667.71/x
  3. Step 3: Cross multiply
    92,976.65x = 139,482.89 × 39,667.71
  4. Step 4: Simplify right side
    92,976.65x = 5,532,966,830.48
  5. Step 5: Solve for x
    x = 5,532,966,830.48/92,976.65
  6. Step 6: Final answer
    x = 59,509.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.