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Finding the Fourth Proportional to 61,407.80, 92,111.70 and 30,236.60

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Solution

The fourth proportional to 61,407.80, 92,111.70 and 30,236.60 is: 45,354.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,407.80 : 92,111.70 = 30,236.60 : x
  2. Step 2: Convert to fraction form
    61,407.80/92,111.70 = 30,236.60/x
  3. Step 3: Cross multiply
    61,407.80x = 92,111.70 × 30,236.60
  4. Step 4: Simplify right side
    61,407.80x = 2,785,144,628.22
  5. Step 5: Solve for x
    x = 2,785,144,628.22/61,407.80
  6. Step 6: Final answer
    x = 45,354.90

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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.