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Finding the Fourth Proportional to 312,196.66, 430,831.39 and 168,956.70

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Solution

The fourth proportional to 312,196.66, 430,831.39 and 168,956.70 is: 233,160.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,196.66 : 430,831.39 = 168,956.70 : x
  2. Step 2: Convert to fraction form
    312,196.66/430,831.39 = 168,956.70/x
  3. Step 3: Cross multiply
    312,196.66x = 430,831.39 × 168,956.70
  4. Step 4: Simplify right side
    312,196.66x = 72,791,849,910.81
  5. Step 5: Solve for x
    x = 72,791,849,910.81/312,196.66
  6. Step 6: Final answer
    x = 233,160.25

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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.