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Finding the Fourth Proportional to 611,961.66, 917,942.31 and 191,237.58

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Solution

The fourth proportional to 611,961.66, 917,942.31 and 191,237.58 is: 286,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,961.66 : 917,942.31 = 191,237.58 : x
  2. Step 2: Convert to fraction form
    611,961.66/917,942.31 = 191,237.58/x
  3. Step 3: Cross multiply
    611,961.66x = 917,942.31 × 191,237.58
  4. Step 4: Simplify right side
    611,961.66x = 175,545,065,944.01
  5. Step 5: Solve for x
    x = 175,545,065,944.01/611,961.66
  6. Step 6: Final answer
    x = 286,856.31

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1.5x scale

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.