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Finding the Fourth Proportional to 105,600.80, 158,401.20 and 104,045.60

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Solution

The fourth proportional to 105,600.80, 158,401.20 and 104,045.60 is: 156,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,600.80 : 158,401.20 = 104,045.60 : x
  2. Step 2: Convert to fraction form
    105,600.80/158,401.20 = 104,045.60/x
  3. Step 3: Cross multiply
    105,600.80x = 158,401.20 × 104,045.60
  4. Step 4: Simplify right side
    105,600.80x = 16,480,947,894.72
  5. Step 5: Solve for x
    x = 16,480,947,894.72/105,600.80
  6. Step 6: Final answer
    x = 156,068.40

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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.