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Finding the Fourth Proportional to 111,812.32, 154,302.16 and 64,064.64

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Solution

The fourth proportional to 111,812.32, 154,302.16 and 64,064.64 is: 88,409.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,812.32 : 154,302.16 = 64,064.64 : x
  2. Step 2: Convert to fraction form
    111,812.32/154,302.16 = 64,064.64/x
  3. Step 3: Cross multiply
    111,812.32x = 154,302.16 × 64,064.64
  4. Step 4: Simplify right side
    111,812.32x = 9,885,312,331.62
  5. Step 5: Solve for x
    x = 9,885,312,331.62/111,812.32
  6. Step 6: Final answer
    x = 88,409.87

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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.