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Finding the Fourth Proportional to 448,211.48, 618,531.84 and 247,007.48

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Solution

The fourth proportional to 448,211.48, 618,531.84 and 247,007.48 is: 340,870.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,211.48 : 618,531.84 = 247,007.48 : x
  2. Step 2: Convert to fraction form
    448,211.48/618,531.84 = 247,007.48/x
  3. Step 3: Cross multiply
    448,211.48x = 618,531.84 × 247,007.48
  4. Step 4: Simplify right side
    448,211.48x = 152,781,988,005.50
  5. Step 5: Solve for x
    x = 152,781,988,005.50/448,211.48
  6. Step 6: Final answer
    x = 340,870.32

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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.