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Finding the Fourth Proportional to 61,572.10, 92,336.55 and 31,980.10

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Solution

The fourth proportional to 61,572.10, 92,336.55 and 31,980.10 is: 47,958.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,572.10 : 92,336.55 = 31,980.10 : x
  2. Step 2: Convert to fraction form
    61,572.10/92,336.55 = 31,980.10/x
  3. Step 3: Cross multiply
    61,572.10x = 92,336.55 × 31,980.10
  4. Step 4: Simplify right side
    61,572.10x = 2,952,932,102.66
  5. Step 5: Solve for x
    x = 2,952,932,102.66/61,572.10
  6. Step 6: Final answer
    x = 47,958.93

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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.