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Finding the Fourth Proportional to 623,847.86, 861,130.65 and 369,198.44

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Solution

The fourth proportional to 623,847.86, 861,130.65 and 369,198.44 is: 509,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,847.86 : 861,130.65 = 369,198.44 : x
  2. Step 2: Convert to fraction form
    623,847.86/861,130.65 = 369,198.44/x
  3. Step 3: Cross multiply
    623,847.86x = 861,130.65 × 369,198.44
  4. Step 4: Simplify right side
    623,847.86x = 317,928,092,616.19
  5. Step 5: Solve for x
    x = 317,928,092,616.19/623,847.86
  6. Step 6: Final answer
    x = 509,624.40

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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.