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Finding the Fourth Proportional to 266,953.64, 368,474.82 and 153,856.04

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Solution

The fourth proportional to 266,953.64, 368,474.82 and 153,856.04 is: 212,366.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,953.64 : 368,474.82 = 153,856.04 : x
  2. Step 2: Convert to fraction form
    266,953.64/368,474.82 = 153,856.04/x
  3. Step 3: Cross multiply
    266,953.64x = 368,474.82 × 153,856.04
  4. Step 4: Simplify right side
    266,953.64x = 56,692,076,644.91
  5. Step 5: Solve for x
    x = 56,692,076,644.91/266,953.64
  6. Step 6: Final answer
    x = 212,366.75

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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.