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Finding the Fourth Proportional to 316,076.16, 474,114.69 and 129,087.66

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Solution

The fourth proportional to 316,076.16, 474,114.69 and 129,087.66 is: 193,631.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,076.16 : 474,114.69 = 129,087.66 : x
  2. Step 2: Convert to fraction form
    316,076.16/474,114.69 = 129,087.66/x
  3. Step 3: Cross multiply
    316,076.16x = 474,114.69 × 129,087.66
  4. Step 4: Simplify right side
    316,076.16x = 61,202,355,903.73
  5. Step 5: Solve for x
    x = 61,202,355,903.73/316,076.16
  6. Step 6: Final answer
    x = 193,631.67

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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.