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Finding the Fourth Proportional to 61,193.40, 91,779.50 and 16,809.58

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Solution

The fourth proportional to 61,193.40, 91,779.50 and 16,809.58 is: 25,211.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,193.40 : 91,779.50 = 16,809.58 : x
  2. Step 2: Convert to fraction form
    61,193.40/91,779.50 = 16,809.58/x
  3. Step 3: Cross multiply
    61,193.40x = 91,779.50 × 16,809.58
  4. Step 4: Simplify right side
    61,193.40x = 1,542,774,847.61
  5. Step 5: Solve for x
    x = 1,542,774,847.61/61,193.40
  6. Step 6: Final answer
    x = 25,211.46

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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.