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Finding the Fourth Proportional to 544,421.88, 816,798.60 and 278,369.28

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Solution

The fourth proportional to 544,421.88, 816,798.60 and 278,369.28 is: 417,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,421.88 : 816,798.60 = 278,369.28 : x
  2. Step 2: Convert to fraction form
    544,421.88/816,798.60 = 278,369.28/x
  3. Step 3: Cross multiply
    544,421.88x = 816,798.60 × 278,369.28
  4. Step 4: Simplify right side
    544,421.88x = 227,371,638,187.01
  5. Step 5: Solve for x
    x = 227,371,638,187.01/544,421.88
  6. Step 6: Final answer
    x = 417,638.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.