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Finding the Fourth Proportional to 291,509.15, 436,275.32 and 179,259.89

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Solution

The fourth proportional to 291,509.15, 436,275.32 and 179,259.89 is: 268,282.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,509.15 : 436,275.32 = 179,259.89 : x
  2. Step 2: Convert to fraction form
    291,509.15/436,275.32 = 179,259.89/x
  3. Step 3: Cross multiply
    291,509.15x = 436,275.32 × 179,259.89
  4. Step 4: Simplify right side
    291,509.15x = 78,206,662,795.24
  5. Step 5: Solve for x
    x = 78,206,662,795.24/291,509.15
  6. Step 6: Final answer
    x = 268,282.02

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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.