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Finding the Fourth Proportional to 557,149.70, 835,724.55 and 521,720.30

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Solution

The fourth proportional to 557,149.70, 835,724.55 and 521,720.30 is: 782,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,149.70 : 835,724.55 = 521,720.30 : x
  2. Step 2: Convert to fraction form
    557,149.70/835,724.55 = 521,720.30/x
  3. Step 3: Cross multiply
    557,149.70x = 835,724.55 × 521,720.30
  4. Step 4: Simplify right side
    557,149.70x = 436,014,462,943.37
  5. Step 5: Solve for x
    x = 436,014,462,943.37/557,149.70
  6. Step 6: Final answer
    x = 782,580.45

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Half scale
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Double scale
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Similar ratio
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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.