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Finding the Fourth Proportional to 554,111.62, 764,319.45 and 384,283.78

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Solution

The fourth proportional to 554,111.62, 764,319.45 and 384,283.78 is: 530,065.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,111.62 : 764,319.45 = 384,283.78 : x
  2. Step 2: Convert to fraction form
    554,111.62/764,319.45 = 384,283.78/x
  3. Step 3: Cross multiply
    554,111.62x = 764,319.45 × 384,283.78
  4. Step 4: Simplify right side
    554,111.62x = 293,715,567,373.52
  5. Step 5: Solve for x
    x = 293,715,567,373.52/554,111.62
  6. Step 6: Final answer
    x = 530,065.71

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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.