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Finding the Fourth Proportional to 61,477.20, 92,215.80 and 45,730.80

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Solution

The fourth proportional to 61,477.20, 92,215.80 and 45,730.80 is: 68,596.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,477.20 : 92,215.80 = 45,730.80 : x
  2. Step 2: Convert to fraction form
    61,477.20/92,215.80 = 45,730.80/x
  3. Step 3: Cross multiply
    61,477.20x = 92,215.80 × 45,730.80
  4. Step 4: Simplify right side
    61,477.20x = 4,217,102,306.64
  5. Step 5: Solve for x
    x = 4,217,102,306.64/61,477.20
  6. Step 6: Final answer
    x = 68,596.20

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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.