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Finding the Fourth Proportional to 462,663.56, 638,442.19 and 255,923.21

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Solution

The fourth proportional to 462,663.56, 638,442.19 and 255,923.21 is: 353,155.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,663.56 : 638,442.19 = 255,923.21 : x
  2. Step 2: Convert to fraction form
    462,663.56/638,442.19 = 255,923.21/x
  3. Step 3: Cross multiply
    462,663.56x = 638,442.19 × 255,923.21
  4. Step 4: Simplify right side
    462,663.56x = 163,392,174,664.23
  5. Step 5: Solve for x
    x = 163,392,174,664.23/462,663.56
  6. Step 6: Final answer
    x = 353,155.49

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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.