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Finding the Fourth Proportional to 562,861.20, 776,747.16 and 308,210.16

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Solution

The fourth proportional to 562,861.20, 776,747.16 and 308,210.16 is: 425,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,861.20 : 776,747.16 = 308,210.16 : x
  2. Step 2: Convert to fraction form
    562,861.20/776,747.16 = 308,210.16/x
  3. Step 3: Cross multiply
    562,861.20x = 776,747.16 × 308,210.16
  4. Step 4: Simplify right side
    562,861.20x = 239,401,366,463.15
  5. Step 5: Solve for x
    x = 239,401,366,463.15/562,861.20
  6. Step 6: Final answer
    x = 425,329.31

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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.