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Finding the Fourth Proportional to 386,635.48, 533,550.44 and 216,865.96

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Solution

The fourth proportional to 386,635.48, 533,550.44 and 216,865.96 is: 299,271.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,635.48 : 533,550.44 = 216,865.96 : x
  2. Step 2: Convert to fraction form
    386,635.48/533,550.44 = 216,865.96/x
  3. Step 3: Cross multiply
    386,635.48x = 533,550.44 × 216,865.96
  4. Step 4: Simplify right side
    386,635.48x = 115,708,927,587.31
  5. Step 5: Solve for x
    x = 115,708,927,587.31/386,635.48
  6. Step 6: Final answer
    x = 299,271.37

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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.