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Finding the Fourth Proportional to 611,812.32, 917,718.48 and 191,121.36

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Solution

The fourth proportional to 611,812.32, 917,718.48 and 191,121.36 is: 286,682.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,812.32 : 917,718.48 = 191,121.36 : x
  2. Step 2: Convert to fraction form
    611,812.32/917,718.48 = 191,121.36/x
  3. Step 3: Cross multiply
    611,812.32x = 917,718.48 × 191,121.36
  4. Step 4: Simplify right side
    611,812.32x = 175,395,603,994.73
  5. Step 5: Solve for x
    x = 175,395,603,994.73/611,812.32
  6. Step 6: Final answer
    x = 286,682.04

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Similar ratio
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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.