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Finding the Fourth Proportional to 111,804.32, 154,291.12 and 64,056.64

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Solution

The fourth proportional to 111,804.32, 154,291.12 and 64,056.64 is: 88,398.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,804.32 : 154,291.12 = 64,056.64 : x
  2. Step 2: Convert to fraction form
    111,804.32/154,291.12 = 64,056.64/x
  3. Step 3: Cross multiply
    111,804.32x = 154,291.12 × 64,056.64
  4. Step 4: Simplify right side
    111,804.32x = 9,883,370,729.04
  5. Step 5: Solve for x
    x = 9,883,370,729.04/111,804.32
  6. Step 6: Final answer
    x = 88,398.83

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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.