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Finding the Fourth Proportional to 612,038.80, 918,187.80 and 185,539.60

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Solution

The fourth proportional to 612,038.80, 918,187.80 and 185,539.60 is: 278,348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,038.80 : 918,187.80 = 185,539.60 : x
  2. Step 2: Convert to fraction form
    612,038.80/918,187.80 = 185,539.60/x
  3. Step 3: Cross multiply
    612,038.80x = 918,187.80 × 185,539.60
  4. Step 4: Simplify right side
    612,038.80x = 170,360,197,136.88
  5. Step 5: Solve for x
    x = 170,360,197,136.88/612,038.80
  6. Step 6: Final answer
    x = 278,348.69

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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.