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Finding the Fourth Proportional to 612,028.80, 918,172.80 and 185,529.60

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Solution

The fourth proportional to 612,028.80, 918,172.80 and 185,529.60 is: 278,333.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,028.80 : 918,172.80 = 185,529.60 : x
  2. Step 2: Convert to fraction form
    612,028.80/918,172.80 = 185,529.60/x
  3. Step 3: Cross multiply
    612,028.80x = 918,172.80 × 185,529.60
  4. Step 4: Simplify right side
    612,028.80x = 170,348,232,314.88
  5. Step 5: Solve for x
    x = 170,348,232,314.88/612,028.80
  6. Step 6: Final answer
    x = 278,333.69

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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.