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Finding the Fourth Proportional to 111,815.20, 154,310.35 and 64,068.67

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Solution

The fourth proportional to 111,815.20, 154,310.35 and 64,068.67 is: 88,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,815.20 : 154,310.35 = 64,068.67 : x
  2. Step 2: Convert to fraction form
    111,815.20/154,310.35 = 64,068.67/x
  3. Step 3: Cross multiply
    111,815.20x = 154,310.35 × 64,068.67
  4. Step 4: Simplify right side
    111,815.20x = 9,886,458,120.18
  5. Step 5: Solve for x
    x = 9,886,458,120.18/111,815.20
  6. Step 6: Final answer
    x = 88,417.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.