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Finding the Fourth Proportional to 318,963.65, 440,189.69 and 175,723.65

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Solution

The fourth proportional to 318,963.65, 440,189.69 and 175,723.65 is: 242,509.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,963.65 : 440,189.69 = 175,723.65 : x
  2. Step 2: Convert to fraction form
    318,963.65/440,189.69 = 175,723.65/x
  3. Step 3: Cross multiply
    318,963.65x = 440,189.69 × 175,723.65
  4. Step 4: Simplify right side
    318,963.65x = 77,351,738,140.55
  5. Step 5: Solve for x
    x = 77,351,738,140.55/318,963.65
  6. Step 6: Final answer
    x = 242,509.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.