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Finding the Fourth Proportional to 61,490.80, 92,236.20 and 34,809.40

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Solution

The fourth proportional to 61,490.80, 92,236.20 and 34,809.40 is: 52,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,490.80 : 92,236.20 = 34,809.40 : x
  2. Step 2: Convert to fraction form
    61,490.80/92,236.20 = 34,809.40/x
  3. Step 3: Cross multiply
    61,490.80x = 92,236.20 × 34,809.40
  4. Step 4: Simplify right side
    61,490.80x = 3,210,686,780.28
  5. Step 5: Solve for x
    x = 3,210,686,780.28/61,490.80
  6. Step 6: Final answer
    x = 52,214.10

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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.