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Finding the Fourth Proportional to 590,542.40, 885,943.20 and 191,115.20

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Solution

The fourth proportional to 590,542.40, 885,943.20 and 191,115.20 is: 286,714.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,542.40 : 885,943.20 = 191,115.20 : x
  2. Step 2: Convert to fraction form
    590,542.40/885,943.20 = 191,115.20/x
  3. Step 3: Cross multiply
    590,542.40x = 885,943.20 × 191,115.20
  4. Step 4: Simplify right side
    590,542.40x = 169,317,211,856.64
  5. Step 5: Solve for x
    x = 169,317,211,856.64/590,542.40
  6. Step 6: Final answer
    x = 286,714.74

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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.