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Finding the Fourth Proportional to 612,165.80, 918,248.70 and 191,570.60

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Solution

The fourth proportional to 612,165.80, 918,248.70 and 191,570.60 is: 287,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,165.80 : 918,248.70 = 191,570.60 : x
  2. Step 2: Convert to fraction form
    612,165.80/918,248.70 = 191,570.60/x
  3. Step 3: Cross multiply
    612,165.80x = 918,248.70 × 191,570.60
  4. Step 4: Simplify right side
    612,165.80x = 175,909,454,408.22
  5. Step 5: Solve for x
    x = 175,909,454,408.22/612,165.80
  6. Step 6: Final answer
    x = 287,355.90

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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.