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Finding the Fourth Proportional to 980,887.66, 1,354,285.51 and 877,200.14

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Solution

The fourth proportional to 980,887.66, 1,354,285.51 and 877,200.14 is: 1,211,126.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,887.66 : 1,354,285.51 = 877,200.14 : x
  2. Step 2: Convert to fraction form
    980,887.66/1,354,285.51 = 877,200.14/x
  3. Step 3: Cross multiply
    980,887.66x = 1,354,285.51 × 877,200.14
  4. Step 4: Simplify right side
    980,887.66x = 1,187,979,440,164.68
  5. Step 5: Solve for x
    x = 1,187,979,440,164.68/980,887.66
  6. Step 6: Final answer
    x = 1,211,126.91

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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.