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Finding the Fourth Proportional to 611,326.20, 916,989.30 and 168,094.20

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Solution

The fourth proportional to 611,326.20, 916,989.30 and 168,094.20 is: 252,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,326.20 : 916,989.30 = 168,094.20 : x
  2. Step 2: Convert to fraction form
    611,326.20/916,989.30 = 168,094.20/x
  3. Step 3: Cross multiply
    611,326.20x = 916,989.30 × 168,094.20
  4. Step 4: Simplify right side
    611,326.20x = 154,140,582,792.06
  5. Step 5: Solve for x
    x = 154,140,582,792.06/611,326.20
  6. Step 6: Final answer
    x = 252,141.30

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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.