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Finding the Fourth Proportional to 312,154.83, 430,774.79 and 168,914.87

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Solution

The fourth proportional to 312,154.83, 430,774.79 and 168,914.87 is: 233,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,154.83 : 430,774.79 = 168,914.87 : x
  2. Step 2: Convert to fraction form
    312,154.83/430,774.79 = 168,914.87/x
  3. Step 3: Cross multiply
    312,154.83x = 430,774.79 × 168,914.87
  4. Step 4: Simplify right side
    312,154.83x = 72,764,267,931.84
  5. Step 5: Solve for x
    x = 72,764,267,931.84/312,154.83
  6. Step 6: Final answer
    x = 233,103.13

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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.