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Finding the Fourth Proportional to 191,283.67, 286,802.43 and 91,441.63

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Solution

The fourth proportional to 191,283.67, 286,802.43 and 91,441.63 is: 137,103.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,283.67 : 286,802.43 = 91,441.63 : x
  2. Step 2: Convert to fraction form
    191,283.67/286,802.43 = 91,441.63/x
  3. Step 3: Cross multiply
    191,283.67x = 286,802.43 × 91,441.63
  4. Step 4: Simplify right side
    191,283.67x = 26,225,681,687.16
  5. Step 5: Solve for x
    x = 26,225,681,687.16/191,283.67
  6. Step 6: Final answer
    x = 137,103.61

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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.