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Finding the Fourth Proportional to 556,653.56, 768,581.36 and 342,081.32

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Solution

The fourth proportional to 556,653.56, 768,581.36 and 342,081.32 is: 472,317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,653.56 : 768,581.36 = 342,081.32 : x
  2. Step 2: Convert to fraction form
    556,653.56/768,581.36 = 342,081.32/x
  3. Step 3: Cross multiply
    556,653.56x = 768,581.36 × 342,081.32
  4. Step 4: Simplify right side
    556,653.56x = 262,917,326,156.20
  5. Step 5: Solve for x
    x = 262,917,326,156.20/556,653.56
  6. Step 6: Final answer
    x = 472,317.69

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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.