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Finding the Fourth Proportional to 1,159,641, 1,600,317.72 and 643,404.36

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Solution

The fourth proportional to 1,159,641, 1,600,317.72 and 643,404.36 is: 887,905.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,641 : 1,600,317.72 = 643,404.36 : x
  2. Step 2: Convert to fraction form
    1,159,641/1,600,317.72 = 643,404.36/x
  3. Step 3: Cross multiply
    1,159,641x = 1,600,317.72 × 643,404.36
  4. Step 4: Simplify right side
    1,159,641x = 1,029,651,398,433.26
  5. Step 5: Solve for x
    x = 1,029,651,398,433.26/1,159,641
  6. Step 6: Final answer
    x = 887,905.31

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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.