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Finding the Fourth Proportional to 287,490.57, 430,759.14 and 174,830.01

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Solution

The fourth proportional to 287,490.57, 430,759.14 and 174,830.01 is: 261,955.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,490.57 : 430,759.14 = 174,830.01 : x
  2. Step 2: Convert to fraction form
    287,490.57/430,759.14 = 174,830.01/x
  3. Step 3: Cross multiply
    287,490.57x = 430,759.14 × 174,830.01
  4. Step 4: Simplify right side
    287,490.57x = 75,309,624,753.79
  5. Step 5: Solve for x
    x = 75,309,624,753.79/287,490.57
  6. Step 6: Final answer
    x = 261,955.11

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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.