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Finding the Fourth Proportional to 474,265.60, 711,139.20 and 193,465.60

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Solution

The fourth proportional to 474,265.60, 711,139.20 and 193,465.60 is: 290,092.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,265.60 : 711,139.20 = 193,465.60 : x
  2. Step 2: Convert to fraction form
    474,265.60/711,139.20 = 193,465.60/x
  3. Step 3: Cross multiply
    474,265.60x = 711,139.20 × 193,465.60
  4. Step 4: Simplify right side
    474,265.60x = 137,580,972,011.52
  5. Step 5: Solve for x
    x = 137,580,972,011.52/474,265.60
  6. Step 6: Final answer
    x = 290,092.67

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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.