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Finding the Fourth Proportional to 304,230.21, 456,356.70 and 91,000.91

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Solution

The fourth proportional to 304,230.21, 456,356.70 and 91,000.91 is: 136,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,230.21 : 456,356.70 = 91,000.91 : x
  2. Step 2: Convert to fraction form
    304,230.21/456,356.70 = 91,000.91/x
  3. Step 3: Cross multiply
    304,230.21x = 456,356.70 × 91,000.91
  4. Step 4: Simplify right side
    304,230.21x = 41,528,872,702.81
  5. Step 5: Solve for x
    x = 41,528,872,702.81/304,230.21
  6. Step 6: Final answer
    x = 136,504.76

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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.