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Finding the Fourth Proportional to 208,292.93, 287,443.67 and 112,799.60

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Solution

The fourth proportional to 208,292.93, 287,443.67 and 112,799.60 is: 155,663.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,292.93 : 287,443.67 = 112,799.60 : x
  2. Step 2: Convert to fraction form
    208,292.93/287,443.67 = 112,799.60/x
  3. Step 3: Cross multiply
    208,292.93x = 287,443.67 × 112,799.60
  4. Step 4: Simplify right side
    208,292.93x = 32,423,530,998.53
  5. Step 5: Solve for x
    x = 32,423,530,998.53/208,292.93
  6. Step 6: Final answer
    x = 155,663.14

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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.