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Finding the Fourth Proportional to 612,043.84, 918,065.92 and 191,323.52

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Solution

The fourth proportional to 612,043.84, 918,065.92 and 191,323.52 is: 286,985.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,043.84 : 918,065.92 = 191,323.52 : x
  2. Step 2: Convert to fraction form
    612,043.84/918,065.92 = 191,323.52/x
  3. Step 3: Cross multiply
    612,043.84x = 918,065.92 × 191,323.52
  4. Step 4: Simplify right side
    612,043.84x = 175,647,603,406.44
  5. Step 5: Solve for x
    x = 175,647,603,406.44/612,043.84
  6. Step 6: Final answer
    x = 286,985.33

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Similar ratio
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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.