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Finding the Fourth Proportional to 228,138.53, 342,093.58 and 70,346.48

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Solution

The fourth proportional to 228,138.53, 342,093.58 and 70,346.48 is: 105,484.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,138.53 : 342,093.58 = 70,346.48 : x
  2. Step 2: Convert to fraction form
    228,138.53/342,093.58 = 70,346.48/x
  3. Step 3: Cross multiply
    228,138.53x = 342,093.58 × 70,346.48
  4. Step 4: Simplify right side
    228,138.53x = 24,065,077,297.26
  5. Step 5: Solve for x
    x = 24,065,077,297.26/228,138.53
  6. Step 6: Final answer
    x = 105,484.50

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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.