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Finding the Fourth Proportional to 556,499.16, 768,078.18 and 327,130.65

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Solution

The fourth proportional to 556,499.16, 768,078.18 and 327,130.65 is: 451,504.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,499.16 : 768,078.18 = 327,130.65 : x
  2. Step 2: Convert to fraction form
    556,499.16/768,078.18 = 327,130.65/x
  3. Step 3: Cross multiply
    556,499.16x = 768,078.18 × 327,130.65
  4. Step 4: Simplify right side
    556,499.16x = 251,261,914,274.22
  5. Step 5: Solve for x
    x = 251,261,914,274.22/556,499.16
  6. Step 6: Final answer
    x = 451,504.57

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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.