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Finding the Fourth Proportional to 540,218.68, 744,612.69 and 383,107.03

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Solution

The fourth proportional to 540,218.68, 744,612.69 and 383,107.03 is: 528,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,218.68 : 744,612.69 = 383,107.03 : x
  2. Step 2: Convert to fraction form
    540,218.68/744,612.69 = 383,107.03/x
  3. Step 3: Cross multiply
    540,218.68x = 744,612.69 × 383,107.03
  4. Step 4: Simplify right side
    540,218.68x = 285,266,356,166.21
  5. Step 5: Solve for x
    x = 285,266,356,166.21/540,218.68
  6. Step 6: Final answer
    x = 528,057.19

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Double scale
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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.