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Finding the Fourth Proportional to 839,792.08, 1,260,416.04 and 440,714.80

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Solution

The fourth proportional to 839,792.08, 1,260,416.04 and 440,714.80 is: 661,454.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,792.08 : 1,260,416.04 = 440,714.80 : x
  2. Step 2: Convert to fraction form
    839,792.08/1,260,416.04 = 440,714.80/x
  3. Step 3: Cross multiply
    839,792.08x = 1,260,416.04 × 440,714.80
  4. Step 4: Simplify right side
    839,792.08x = 555,484,002,985.39
  5. Step 5: Solve for x
    x = 555,484,002,985.39/839,792.08
  6. Step 6: Final answer
    x = 661,454.21

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Double scale
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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.