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Finding the Fourth Proportional to 384,008.80, 529,931.05 and 211,925.52

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Solution

The fourth proportional to 384,008.80, 529,931.05 and 211,925.52 is: 292,456.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,008.80 : 529,931.05 = 211,925.52 : x
  2. Step 2: Convert to fraction form
    384,008.80/529,931.05 = 211,925.52/x
  3. Step 3: Cross multiply
    384,008.80x = 529,931.05 × 211,925.52
  4. Step 4: Simplify right side
    384,008.80x = 112,305,913,335.40
  5. Step 5: Solve for x
    x = 112,305,913,335.40/384,008.80
  6. Step 6: Final answer
    x = 292,456.61

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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.