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Finding the Fourth Proportional to 556,621.92, 768,138.12 and 314,899.56

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Solution

The fourth proportional to 556,621.92, 768,138.12 and 314,899.56 is: 434,561.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,621.92 : 768,138.12 = 314,899.56 : x
  2. Step 2: Convert to fraction form
    556,621.92/768,138.12 = 314,899.56/x
  3. Step 3: Cross multiply
    556,621.92x = 768,138.12 × 314,899.56
  4. Step 4: Simplify right side
    556,621.92x = 241,886,356,007.23
  5. Step 5: Solve for x
    x = 241,886,356,007.23/556,621.92
  6. Step 6: Final answer
    x = 434,561.32

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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.