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Finding the Fourth Proportional to 423,628.56, 584,690.22 and 262,555.20

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Solution

The fourth proportional to 423,628.56, 584,690.22 and 262,555.20 is: 362,377.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,628.56 : 584,690.22 = 262,555.20 : x
  2. Step 2: Convert to fraction form
    423,628.56/584,690.22 = 262,555.20/x
  3. Step 3: Cross multiply
    423,628.56x = 584,690.22 × 262,555.20
  4. Step 4: Simplify right side
    423,628.56x = 153,513,457,650.14
  5. Step 5: Solve for x
    x = 153,513,457,650.14/423,628.56
  6. Step 6: Final answer
    x = 362,377.50

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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.