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Finding the Fourth Proportional to 545,115.80, 817,673.70 and 403,398.20

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Solution

The fourth proportional to 545,115.80, 817,673.70 and 403,398.20 is: 605,097.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,115.80 : 817,673.70 = 403,398.20 : x
  2. Step 2: Convert to fraction form
    545,115.80/817,673.70 = 403,398.20/x
  3. Step 3: Cross multiply
    545,115.80x = 817,673.70 × 403,398.20
  4. Step 4: Simplify right side
    545,115.80x = 329,848,098,767.34
  5. Step 5: Solve for x
    x = 329,848,098,767.34/545,115.80
  6. Step 6: Final answer
    x = 605,097.30

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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.