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Finding the Fourth Proportional to 228,220.30, 342,379.05 and 70,464.70

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Solution

The fourth proportional to 228,220.30, 342,379.05 and 70,464.70 is: 105,712.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,220.30 : 342,379.05 = 70,464.70 : x
  2. Step 2: Convert to fraction form
    228,220.30/342,379.05 = 70,464.70/x
  3. Step 3: Cross multiply
    228,220.30x = 342,379.05 × 70,464.70
  4. Step 4: Simplify right side
    228,220.30x = 24,125,637,044.54
  5. Step 5: Solve for x
    x = 24,125,637,044.54/228,220.30
  6. Step 6: Final answer
    x = 105,712.06

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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.