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Finding the Fourth Proportional to 147,818.76, 203,990.09 and 84,156.56

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Solution

The fourth proportional to 147,818.76, 203,990.09 and 84,156.56 is: 116,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,818.76 : 203,990.09 = 84,156.56 : x
  2. Step 2: Convert to fraction form
    147,818.76/203,990.09 = 84,156.56/x
  3. Step 3: Cross multiply
    147,818.76x = 203,990.09 × 84,156.56
  4. Step 4: Simplify right side
    147,818.76x = 17,167,103,827.71
  5. Step 5: Solve for x
    x = 17,167,103,827.71/147,818.76
  6. Step 6: Final answer
    x = 116,136.16

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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.