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Finding the Fourth Proportional to 448,216.48, 618,538.74 and 247,012.48

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Solution

The fourth proportional to 448,216.48, 618,538.74 and 247,012.48 is: 340,877.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,216.48 : 618,538.74 = 247,012.48 : x
  2. Step 2: Convert to fraction form
    448,216.48/618,538.74 = 247,012.48/x
  3. Step 3: Cross multiply
    448,216.48x = 618,538.74 × 247,012.48
  4. Step 4: Simplify right side
    448,216.48x = 152,786,788,143.48
  5. Step 5: Solve for x
    x = 152,786,788,143.48/448,216.48
  6. Step 6: Final answer
    x = 340,877.22

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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.