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Finding the Fourth Proportional to 562,863.20, 776,749.92 and 308,212.16

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Solution

The fourth proportional to 562,863.20, 776,749.92 and 308,212.16 is: 425,332.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,863.20 : 776,749.92 = 308,212.16 : x
  2. Step 2: Convert to fraction form
    562,863.20/776,749.92 = 308,212.16/x
  3. Step 3: Cross multiply
    562,863.20x = 776,749.92 × 308,212.16
  4. Step 4: Simplify right side
    562,863.20x = 239,403,770,623.03
  5. Step 5: Solve for x
    x = 239,403,770,623.03/562,863.20
  6. Step 6: Final answer
    x = 425,332.07

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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.