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Finding the Fourth Proportional to 147,216.91, 220,820.65 and 61,872.98

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Solution

The fourth proportional to 147,216.91, 220,820.65 and 61,872.98 is: 92,807.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,216.91 : 220,820.65 = 61,872.98 : x
  2. Step 2: Convert to fraction form
    147,216.91/220,820.65 = 61,872.98/x
  3. Step 3: Cross multiply
    147,216.91x = 220,820.65 × 61,872.98
  4. Step 4: Simplify right side
    147,216.91x = 13,662,831,578.36
  5. Step 5: Solve for x
    x = 13,662,831,578.36/147,216.91
  6. Step 6: Final answer
    x = 92,807.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.