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Finding the Fourth Proportional to 313,928.40, 470,892.60 and 166,472.40

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Solution

The fourth proportional to 313,928.40, 470,892.60 and 166,472.40 is: 249,708.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,928.40 : 470,892.60 = 166,472.40 : x
  2. Step 2: Convert to fraction form
    313,928.40/470,892.60 = 166,472.40/x
  3. Step 3: Cross multiply
    313,928.40x = 470,892.60 × 166,472.40
  4. Step 4: Simplify right side
    313,928.40x = 78,390,621,264.24
  5. Step 5: Solve for x
    x = 78,390,621,264.24/313,928.40
  6. Step 6: Final answer
    x = 249,708.60

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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.