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Finding the Fourth Proportional to 286,957.80, 430,436.70 and 181,895.40

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Solution

The fourth proportional to 286,957.80, 430,436.70 and 181,895.40 is: 272,843.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,957.80 : 430,436.70 = 181,895.40 : x
  2. Step 2: Convert to fraction form
    286,957.80/430,436.70 = 181,895.40/x
  3. Step 3: Cross multiply
    286,957.80x = 430,436.70 × 181,895.40
  4. Step 4: Simplify right side
    286,957.80x = 78,294,455,721.18
  5. Step 5: Solve for x
    x = 78,294,455,721.18/286,957.80
  6. Step 6: Final answer
    x = 272,843.10

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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.