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Finding the Fourth Proportional to 618,806.40, 853,961.58 and 377,099.16

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Solution

The fourth proportional to 618,806.40, 853,961.58 and 377,099.16 is: 520,402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,806.40 : 853,961.58 = 377,099.16 : x
  2. Step 2: Convert to fraction form
    618,806.40/853,961.58 = 377,099.16/x
  3. Step 3: Cross multiply
    618,806.40x = 853,961.58 × 377,099.16
  4. Step 4: Simplify right side
    618,806.40x = 322,028,194,490.27
  5. Step 5: Solve for x
    x = 322,028,194,490.27/618,806.40
  6. Step 6: Final answer
    x = 520,402.17

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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.