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Finding the Fourth Proportional to 611,784.40, 844,239.02 and 339,869.40

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Solution

The fourth proportional to 611,784.40, 844,239.02 and 339,869.40 is: 469,006.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,784.40 : 844,239.02 = 339,869.40 : x
  2. Step 2: Convert to fraction form
    611,784.40/844,239.02 = 339,869.40/x
  3. Step 3: Cross multiply
    611,784.40x = 844,239.02 × 339,869.40
  4. Step 4: Simplify right side
    611,784.40x = 286,931,009,183.99
  5. Step 5: Solve for x
    x = 286,931,009,183.99/611,784.40
  6. Step 6: Final answer
    x = 469,006.74

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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.