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Finding the Fourth Proportional to 639,135.71, 958,539.55 and 189,752.32

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Solution

The fourth proportional to 639,135.71, 958,539.55 and 189,752.32 is: 284,579.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,135.71 : 958,539.55 = 189,752.32 : x
  2. Step 2: Convert to fraction form
    639,135.71/958,539.55 = 189,752.32/x
  3. Step 3: Cross multiply
    639,135.71x = 958,539.55 × 189,752.32
  4. Step 4: Simplify right side
    639,135.71x = 181,885,103,970.16
  5. Step 5: Solve for x
    x = 181,885,103,970.16/639,135.71
  6. Step 6: Final answer
    x = 284,579.78

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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.