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Finding the Fourth Proportional to 291,287.52, 436,934.16 and 91,603.44

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Solution

The fourth proportional to 291,287.52, 436,934.16 and 91,603.44 is: 137,406.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,287.52 : 436,934.16 = 91,603.44 : x
  2. Step 2: Convert to fraction form
    291,287.52/436,934.16 = 91,603.44/x
  3. Step 3: Cross multiply
    291,287.52x = 436,934.16 × 91,603.44
  4. Step 4: Simplify right side
    291,287.52x = 40,024,672,109.51
  5. Step 5: Solve for x
    x = 40,024,672,109.51/291,287.52
  6. Step 6: Final answer
    x = 137,406.07

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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.