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Finding the Fourth Proportional to 611,952.66, 917,928.84 and 191,228.55

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Solution

The fourth proportional to 611,952.66, 917,928.84 and 191,228.55 is: 286,842.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,952.66 : 917,928.84 = 191,228.55 : x
  2. Step 2: Convert to fraction form
    611,952.66/917,928.84 = 191,228.55/x
  3. Step 3: Cross multiply
    611,952.66x = 917,928.84 × 191,228.55
  4. Step 4: Simplify right side
    611,952.66x = 175,534,201,076.38
  5. Step 5: Solve for x
    x = 175,534,201,076.38/611,952.66
  6. Step 6: Final answer
    x = 286,842.78

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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.