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Finding the Fourth Proportional to 619,649.85, 854,634.71 and 448,210.92

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Solution

The fourth proportional to 619,649.85, 854,634.71 and 448,210.92 is: 618,182.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,649.85 : 854,634.71 = 448,210.92 : x
  2. Step 2: Convert to fraction form
    619,649.85/854,634.71 = 448,210.92/x
  3. Step 3: Cross multiply
    619,649.85x = 854,634.71 × 448,210.92
  4. Step 4: Simplify right side
    619,649.85x = 383,056,609,633.03
  5. Step 5: Solve for x
    x = 383,056,609,633.03/619,649.85
  6. Step 6: Final answer
    x = 618,182.36

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Double scale
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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.