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Finding the Fourth Proportional to 520,111.67, 780,392.88 and 183,392.84

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Solution

The fourth proportional to 520,111.67, 780,392.88 and 183,392.84 is: 275,168.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,111.67 : 780,392.88 = 183,392.84 : x
  2. Step 2: Convert to fraction form
    520,111.67/780,392.88 = 183,392.84/x
  3. Step 3: Cross multiply
    520,111.67x = 780,392.88 × 183,392.84
  4. Step 4: Simplify right side
    520,111.67x = 143,118,468,529.96
  5. Step 5: Solve for x
    x = 143,118,468,529.96/520,111.67
  6. Step 6: Final answer
    x = 275,168.73

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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.