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Finding the Fourth Proportional to 315,171.60, 435,033.84 and 194,350.80

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Solution

The fourth proportional to 315,171.60, 435,033.84 and 194,350.80 is: 268,263.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,171.60 : 435,033.84 = 194,350.80 : x
  2. Step 2: Convert to fraction form
    315,171.60/435,033.84 = 194,350.80/x
  3. Step 3: Cross multiply
    315,171.60x = 435,033.84 × 194,350.80
  4. Step 4: Simplify right side
    315,171.60x = 84,549,174,831.07
  5. Step 5: Solve for x
    x = 84,549,174,831.07/315,171.60
  6. Step 6: Final answer
    x = 268,263.94

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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.