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Finding the Fourth Proportional to 385,406.10, 577,331.55 and 385,406.10

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Solution

The fourth proportional to 385,406.10, 577,331.55 and 385,406.10 is: 577,331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,406.10 : 577,331.55 = 385,406.10 : x
  2. Step 2: Convert to fraction form
    385,406.10/577,331.55 = 385,406.10/x
  3. Step 3: Cross multiply
    385,406.10x = 577,331.55 × 385,406.10
  4. Step 4: Simplify right side
    385,406.10x = 222,507,101,092.46
  5. Step 5: Solve for x
    x = 222,507,101,092.46/385,406.10
  6. Step 6: Final answer
    x = 577,331.55

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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.