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Finding the Fourth Proportional to 849,910.20, 1,191,973.80 and 849,910.20

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Solution

The fourth proportional to 849,910.20, 1,191,973.80 and 849,910.20 is: 1,191,973.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,910.20 : 1,191,973.80 = 849,910.20 : x
  2. Step 2: Convert to fraction form
    849,910.20/1,191,973.80 = 849,910.20/x
  3. Step 3: Cross multiply
    849,910.20x = 1,191,973.80 × 849,910.20
  4. Step 4: Simplify right side
    849,910.20x = 1,013,070,690,752.76
  5. Step 5: Solve for x
    x = 1,013,070,690,752.76/849,910.20
  6. Step 6: Final answer
    x = 1,191,973.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.