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Finding the Fourth Proportional to 228,624.76, 342,811.86 and 70,809.40

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Solution

The fourth proportional to 228,624.76, 342,811.86 and 70,809.40 is: 106,175.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,624.76 : 342,811.86 = 70,809.40 : x
  2. Step 2: Convert to fraction form
    228,624.76/342,811.86 = 70,809.40/x
  3. Step 3: Cross multiply
    228,624.76x = 342,811.86 × 70,809.40
  4. Step 4: Simplify right side
    228,624.76x = 24,274,302,119.48
  5. Step 5: Solve for x
    x = 24,274,302,119.48/228,624.76
  6. Step 6: Final answer
    x = 106,175.30

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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.