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Finding the Fourth Proportional to 611,113.88, 843,346.14 and 339,199.22

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Solution

The fourth proportional to 611,113.88, 843,346.14 and 339,199.22 is: 468,099.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,113.88 : 843,346.14 = 339,199.22 : x
  2. Step 2: Convert to fraction form
    611,113.88/843,346.14 = 339,199.22/x
  3. Step 3: Cross multiply
    611,113.88x = 843,346.14 × 339,199.22
  4. Step 4: Simplify right side
    611,113.88x = 286,062,352,878.01
  5. Step 5: Solve for x
    x = 286,062,352,878.01/611,113.88
  6. Step 6: Final answer
    x = 468,099.91

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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.