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Finding the Fourth Proportional to 876,653.10, 1,314,979.65 and 811,043.10

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Solution

The fourth proportional to 876,653.10, 1,314,979.65 and 811,043.10 is: 1,216,564.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,653.10 : 1,314,979.65 = 811,043.10 : x
  2. Step 2: Convert to fraction form
    876,653.10/1,314,979.65 = 811,043.10/x
  3. Step 3: Cross multiply
    876,653.10x = 1,314,979.65 × 811,043.10
  4. Step 4: Simplify right side
    876,653.10x = 1,066,505,171,772.91
  5. Step 5: Solve for x
    x = 1,066,505,171,772.91/876,653.10
  6. Step 6: Final answer
    x = 1,216,564.65

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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.