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Finding the Fourth Proportional to 208,326.93, 287,411.89 and 154,009.53

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Solution

The fourth proportional to 208,326.93, 287,411.89 and 154,009.53 is: 212,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,326.93 : 287,411.89 = 154,009.53 : x
  2. Step 2: Convert to fraction form
    208,326.93/287,411.89 = 154,009.53/x
  3. Step 3: Cross multiply
    208,326.93x = 287,411.89 × 154,009.53
  4. Step 4: Simplify right side
    208,326.93x = 44,264,170,095.31
  5. Step 5: Solve for x
    x = 44,264,170,095.31/208,326.93
  6. Step 6: Final answer
    x = 212,474.55

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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.