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Finding the Fourth Proportional to 591,997.63, 816,411.58 and 387,974.22

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Solution

The fourth proportional to 591,997.63, 816,411.58 and 387,974.22 is: 535,047.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,997.63 : 816,411.58 = 387,974.22 : x
  2. Step 2: Convert to fraction form
    591,997.63/816,411.58 = 387,974.22/x
  3. Step 3: Cross multiply
    591,997.63x = 816,411.58 × 387,974.22
  4. Step 4: Simplify right side
    591,997.63x = 316,746,645,949.47
  5. Step 5: Solve for x
    x = 316,746,645,949.47/591,997.63
  6. Step 6: Final answer
    x = 535,047.15

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Double scale
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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.