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Finding the Fourth Proportional to 317,659.96, 438,338.46 and 190,332.28

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Solution

The fourth proportional to 317,659.96, 438,338.46 and 190,332.28 is: 262,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,659.96 : 438,338.46 = 190,332.28 : x
  2. Step 2: Convert to fraction form
    317,659.96/438,338.46 = 190,332.28/x
  3. Step 3: Cross multiply
    317,659.96x = 438,338.46 × 190,332.28
  4. Step 4: Simplify right side
    317,659.96x = 83,429,958,503.49
  5. Step 5: Solve for x
    x = 83,429,958,503.49/317,659.96
  6. Step 6: Final answer
    x = 262,639.20

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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.