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Finding the Fourth Proportional to 448,216.98, 618,539.43 and 247,012.98

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Solution

The fourth proportional to 448,216.98, 618,539.43 and 247,012.98 is: 340,877.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,216.98 : 618,539.43 = 247,012.98 : x
  2. Step 2: Convert to fraction form
    448,216.98/618,539.43 = 247,012.98/x
  3. Step 3: Cross multiply
    448,216.98x = 618,539.43 × 247,012.98
  4. Step 4: Simplify right side
    448,216.98x = 152,787,267,851.80
  5. Step 5: Solve for x
    x = 152,787,267,851.80/448,216.98
  6. Step 6: Final answer
    x = 340,877.91

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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.