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Finding the Fourth Proportional to 868,820.64, 1,198,953 and 506,221.80

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Solution

The fourth proportional to 868,820.64, 1,198,953 and 506,221.80 is: 698,574.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,820.64 : 1,198,953 = 506,221.80 : x
  2. Step 2: Convert to fraction form
    868,820.64/1,198,953 = 506,221.80/x
  3. Step 3: Cross multiply
    868,820.64x = 1,198,953 × 506,221.80
  4. Step 4: Simplify right side
    868,820.64x = 606,936,145,775.40
  5. Step 5: Solve for x
    x = 606,936,145,775.40/868,820.64
  6. Step 6: Final answer
    x = 698,574.73

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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.