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Finding the Fourth Proportional to 827,662.80, 1,240,838.10 and 453,685.80

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Solution

The fourth proportional to 827,662.80, 1,240,838.10 and 453,685.80 is: 680,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,662.80 : 1,240,838.10 = 453,685.80 : x
  2. Step 2: Convert to fraction form
    827,662.80/1,240,838.10 = 453,685.80/x
  3. Step 3: Cross multiply
    827,662.80x = 1,240,838.10 × 453,685.80
  4. Step 4: Simplify right side
    827,662.80x = 562,950,626,068.98
  5. Step 5: Solve for x
    x = 562,950,626,068.98/827,662.80
  6. Step 6: Final answer
    x = 680,169.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.