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Finding the Fourth Proportional to 317,581.50, 476,496.45 and 139,963.62

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Solution

The fourth proportional to 317,581.50, 476,496.45 and 139,963.62 is: 210,000.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,581.50 : 476,496.45 = 139,963.62 : x
  2. Step 2: Convert to fraction form
    317,581.50/476,496.45 = 139,963.62/x
  3. Step 3: Cross multiply
    317,581.50x = 476,496.45 × 139,963.62
  4. Step 4: Simplify right side
    317,581.50x = 66,692,168,059.15
  5. Step 5: Solve for x
    x = 66,692,168,059.15/317,581.50
  6. Step 6: Final answer
    x = 210,000.17

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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.