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Finding the Fourth Proportional to 867,598.80, 1,300,620.60 and 773,120.40

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Solution

The fourth proportional to 867,598.80, 1,300,620.60 and 773,120.40 is: 1,158,987.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,598.80 : 1,300,620.60 = 773,120.40 : x
  2. Step 2: Convert to fraction form
    867,598.80/1,300,620.60 = 773,120.40/x
  3. Step 3: Cross multiply
    867,598.80x = 1,300,620.60 × 773,120.40
  4. Step 4: Simplify right side
    867,598.80x = 1,005,536,318,520.24
  5. Step 5: Solve for x
    x = 1,005,536,318,520.24/867,598.80
  6. Step 6: Final answer
    x = 1,158,987.68

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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.