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Finding the Fourth Proportional to 766,636, 1,057,913.67 and 439,879.84

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Solution

The fourth proportional to 766,636, 1,057,913.67 and 439,879.84 is: 607,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,636 : 1,057,913.67 = 439,879.84 : x
  2. Step 2: Convert to fraction form
    766,636/1,057,913.67 = 439,879.84/x
  3. Step 3: Cross multiply
    766,636x = 1,057,913.67 × 439,879.84
  4. Step 4: Simplify right side
    766,636x = 465,354,895,893.41
  5. Step 5: Solve for x
    x = 465,354,895,893.41/766,636
  6. Step 6: Final answer
    x = 607,008.93

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1.5x scale

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.