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Finding the Fourth Proportional to 61,814.90, 92,729.60 and 19,680.23

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Solution

The fourth proportional to 61,814.90, 92,729.60 and 19,680.23 is: 29,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,814.90 : 92,729.60 = 19,680.23 : x
  2. Step 2: Convert to fraction form
    61,814.90/92,729.60 = 19,680.23/x
  3. Step 3: Cross multiply
    61,814.90x = 92,729.60 × 19,680.23
  4. Step 4: Simplify right side
    61,814.90x = 1,824,939,855.81
  5. Step 5: Solve for x
    x = 1,824,939,855.81/61,814.90
  6. Step 6: Final answer
    x = 29,522.65

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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.