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Finding the Fourth Proportional to 520,334.33, 780,146.34 and 277,211.75

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Solution

The fourth proportional to 520,334.33, 780,146.34 and 277,211.75 is: 415,628.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,334.33 : 780,146.34 = 277,211.75 : x
  2. Step 2: Convert to fraction form
    520,334.33/780,146.34 = 277,211.75/x
  3. Step 3: Cross multiply
    520,334.33x = 780,146.34 × 277,211.75
  4. Step 4: Simplify right side
    520,334.33x = 216,265,732,167.50
  5. Step 5: Solve for x
    x = 216,265,732,167.50/520,334.33
  6. Step 6: Final answer
    x = 415,628.41

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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.