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Finding the Fourth Proportional to 194,817.40, 292,153.20 and 68,408.80

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Solution

The fourth proportional to 194,817.40, 292,153.20 and 68,408.80 is: 102,587.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,817.40 : 292,153.20 = 68,408.80 : x
  2. Step 2: Convert to fraction form
    194,817.40/292,153.20 = 68,408.80/x
  3. Step 3: Cross multiply
    194,817.40x = 292,153.20 × 68,408.80
  4. Step 4: Simplify right side
    194,817.40x = 19,985,849,828.16
  5. Step 5: Solve for x
    x = 19,985,849,828.16/194,817.40
  6. Step 6: Final answer
    x = 102,587.60

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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.