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Finding the Fourth Proportional to 191,092.74, 286,690.95 and 66,443.46

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Solution

The fourth proportional to 191,092.74, 286,690.95 and 66,443.46 is: 99,683.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,092.74 : 286,690.95 = 66,443.46 : x
  2. Step 2: Convert to fraction form
    191,092.74/286,690.95 = 66,443.46/x
  3. Step 3: Cross multiply
    191,092.74x = 286,690.95 × 66,443.46
  4. Step 4: Simplify right side
    191,092.74x = 19,048,738,668.69
  5. Step 5: Solve for x
    x = 19,048,738,668.69/191,092.74
  6. Step 6: Final answer
    x = 99,683.21

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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.