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Finding the Fourth Proportional to 661,571.00, 912,913.09 and 371,142.84

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Solution

The fourth proportional to 661,571.00, 912,913.09 and 371,142.84 is: 512,146.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,571.00 : 912,913.09 = 371,142.84 : x
  2. Step 2: Convert to fraction form
    661,571.00/912,913.09 = 371,142.84/x
  3. Step 3: Cross multiply
    661,571.00x = 912,913.09 × 371,142.84
  4. Step 4: Simplify right side
    661,571.00x = 338,821,155,967.92
  5. Step 5: Solve for x
    x = 338,821,155,967.92/661,571.00
  6. Step 6: Final answer
    x = 512,146.33

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Double scale
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Similar ratio
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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.