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Finding the Fourth Proportional to 556,803.66, 768,391.11 and 302,154.78

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Solution

The fourth proportional to 556,803.66, 768,391.11 and 302,154.78 is: 416,974.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,803.66 : 768,391.11 = 302,154.78 : x
  2. Step 2: Convert to fraction form
    556,803.66/768,391.11 = 302,154.78/x
  3. Step 3: Cross multiply
    556,803.66x = 768,391.11 × 302,154.78
  4. Step 4: Simplify right side
    556,803.66x = 232,173,046,796.01
  5. Step 5: Solve for x
    x = 232,173,046,796.01/556,803.66
  6. Step 6: Final answer
    x = 416,974.71

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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.