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Finding the Fourth Proportional to 161,227.32, 221,906.43 and 141,981.09

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Solution

The fourth proportional to 161,227.32, 221,906.43 and 141,981.09 is: 195,416.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,227.32 : 221,906.43 = 141,981.09 : x
  2. Step 2: Convert to fraction form
    161,227.32/221,906.43 = 141,981.09/x
  3. Step 3: Cross multiply
    161,227.32x = 221,906.43 × 141,981.09
  4. Step 4: Simplify right side
    161,227.32x = 31,506,516,809.41
  5. Step 5: Solve for x
    x = 31,506,516,809.41/161,227.32
  6. Step 6: Final answer
    x = 195,416.74

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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.