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Finding the Fourth Proportional to 630,350.28, 873,563.43 and 618,388.20

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Solution

The fourth proportional to 630,350.28, 873,563.43 and 618,388.20 is: 856,985.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,350.28 : 873,563.43 = 618,388.20 : x
  2. Step 2: Convert to fraction form
    630,350.28/873,563.43 = 618,388.20/x
  3. Step 3: Cross multiply
    630,350.28x = 873,563.43 × 618,388.20
  4. Step 4: Simplify right side
    630,350.28x = 540,201,317,063.53
  5. Step 5: Solve for x
    x = 540,201,317,063.53/630,350.28
  6. Step 6: Final answer
    x = 856,985.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.