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Finding the Fourth Proportional to 356,687.15, 534,875.13 and 134,915.63

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Solution

The fourth proportional to 356,687.15, 534,875.13 and 134,915.63 is: 202,314.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,687.15 : 534,875.13 = 134,915.63 : x
  2. Step 2: Convert to fraction form
    356,687.15/534,875.13 = 134,915.63/x
  3. Step 3: Cross multiply
    356,687.15x = 534,875.13 × 134,915.63
  4. Step 4: Simplify right side
    356,687.15x = 72,163,012,460.91
  5. Step 5: Solve for x
    x = 72,163,012,460.91/356,687.15
  6. Step 6: Final answer
    x = 202,314.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.