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Finding the Fourth Proportional to 61,687.20, 92,530.80 and 26,666.40

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Solution

The fourth proportional to 61,687.20, 92,530.80 and 26,666.40 is: 39,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,687.20 : 92,530.80 = 26,666.40 : x
  2. Step 2: Convert to fraction form
    61,687.20/92,530.80 = 26,666.40/x
  3. Step 3: Cross multiply
    61,687.20x = 92,530.80 × 26,666.40
  4. Step 4: Simplify right side
    61,687.20x = 2,467,463,325.12
  5. Step 5: Solve for x
    x = 2,467,463,325.12/61,687.20
  6. Step 6: Final answer
    x = 39,999.60

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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.