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Finding the Fourth Proportional to 168,683,755.60, 253,025,633.40 and 100,603,320.40

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Solution

The fourth proportional to 168,683,755.60, 253,025,633.40 and 100,603,320.40 is: 150,904,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,683,755.60 : 253,025,633.40 = 100,603,320.40 : x
  2. Step 2: Convert to fraction form
    168,683,755.60/253,025,633.40 = 100,603,320.40/x
  3. Step 3: Cross multiply
    168,683,755.60x = 253,025,633.40 × 100,603,320.40
  4. Step 4: Simplify right side
    168,683,755.60x = 25,455,218,866,353,144
  5. Step 5: Solve for x
    x = 25,455,218,866,353,144/168,683,755.60
  6. Step 6: Final answer
    x = 150,904,980.60

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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.