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Finding the Fourth Proportional to 768,516.01, 1,060,642.04 and 639,226.37

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Solution

The fourth proportional to 768,516.01, 1,060,642.04 and 639,226.37 is: 882,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,516.01 : 1,060,642.04 = 639,226.37 : x
  2. Step 2: Convert to fraction form
    768,516.01/1,060,642.04 = 639,226.37/x
  3. Step 3: Cross multiply
    768,516.01x = 1,060,642.04 × 639,226.37
  4. Step 4: Simplify right side
    768,516.01x = 677,990,361,098.60
  5. Step 5: Solve for x
    x = 677,990,361,098.60/768,516.01
  6. Step 6: Final answer
    x = 882,207.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.