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Finding the Fourth Proportional to 611,459.20, 843,785.56 and 339,544.41

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Solution

The fourth proportional to 611,459.20, 843,785.56 and 339,544.41 is: 468,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,459.20 : 843,785.56 = 339,544.41 : x
  2. Step 2: Convert to fraction form
    611,459.20/843,785.56 = 339,544.41/x
  3. Step 3: Cross multiply
    611,459.20x = 843,785.56 × 339,544.41
  4. Step 4: Simplify right side
    611,459.20x = 286,502,670,136.72
  5. Step 5: Solve for x
    x = 286,502,670,136.72/611,459.20
  6. Step 6: Final answer
    x = 468,555.66

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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.