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Finding the Fourth Proportional to 1,928,943.96, 2,891,605.58 and 648,656.24

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Solution

The fourth proportional to 1,928,943.96, 2,891,605.58 and 648,656.24 is: 972,375.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928,943.96 : 2,891,605.58 = 648,656.24 : x
  2. Step 2: Convert to fraction form
    1,928,943.96/2,891,605.58 = 648,656.24/x
  3. Step 3: Cross multiply
    1,928,943.96x = 2,891,605.58 × 648,656.24
  4. Step 4: Simplify right side
    1,928,943.96x = 1,875,657,991,465.66
  5. Step 5: Solve for x
    x = 1,875,657,991,465.66/1,928,943.96
  6. Step 6: Final answer
    x = 972,375.58

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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.