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Finding the Fourth Proportional to 395,983.61, 546,424.73 and 223,919.16

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Solution

The fourth proportional to 395,983.61, 546,424.73 and 223,919.16 is: 308,989.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,983.61 : 546,424.73 = 223,919.16 : x
  2. Step 2: Convert to fraction form
    395,983.61/546,424.73 = 223,919.16/x
  3. Step 3: Cross multiply
    395,983.61x = 546,424.73 × 223,919.16
  4. Step 4: Simplify right side
    395,983.61x = 122,354,965,425.23
  5. Step 5: Solve for x
    x = 122,354,965,425.23/395,983.61
  6. Step 6: Final answer
    x = 308,989.98

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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.