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Finding the Fourth Proportional to 183,411.40, 275,117.10 and 120,425.80

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Solution

The fourth proportional to 183,411.40, 275,117.10 and 120,425.80 is: 180,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,411.40 : 275,117.10 = 120,425.80 : x
  2. Step 2: Convert to fraction form
    183,411.40/275,117.10 = 120,425.80/x
  3. Step 3: Cross multiply
    183,411.40x = 275,117.10 × 120,425.80
  4. Step 4: Simplify right side
    183,411.40x = 33,131,196,861.18
  5. Step 5: Solve for x
    x = 33,131,196,861.18/183,411.40
  6. Step 6: Final answer
    x = 180,638.70

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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.