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Finding the Fourth Proportional to 652,536,249.40, 978,804,374.10 and 394,547,231.80

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Solution

The fourth proportional to 652,536,249.40, 978,804,374.10 and 394,547,231.80 is: 591,820,847.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,536,249.40 : 978,804,374.10 = 394,547,231.80 : x
  2. Step 2: Convert to fraction form
    652,536,249.40/978,804,374.10 = 394,547,231.80/x
  3. Step 3: Cross multiply
    652,536,249.40x = 978,804,374.10 × 394,547,231.80
  4. Step 4: Simplify right side
    652,536,249.40x = 386,184,556,274,886,656
  5. Step 5: Solve for x
    x = 386,184,556,274,886,656/652,536,249.40
  6. Step 6: Final answer
    x = 591,820,847.70

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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.