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Finding the Fourth Proportional to 208,295.59, 287,366.52 and 121,066.18

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Solution

The fourth proportional to 208,295.59, 287,366.52 and 121,066.18 is: 167,024.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,295.59 : 287,366.52 = 121,066.18 : x
  2. Step 2: Convert to fraction form
    208,295.59/287,366.52 = 121,066.18/x
  3. Step 3: Cross multiply
    208,295.59x = 287,366.52 × 121,066.18
  4. Step 4: Simplify right side
    208,295.59x = 34,790,366,836.29
  5. Step 5: Solve for x
    x = 34,790,366,836.29/208,295.59
  6. Step 6: Final answer
    x = 167,024.02

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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.