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Finding the Fourth Proportional to 312,228.65, 430,885.98 and 191,346.59

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Solution

The fourth proportional to 312,228.65, 430,885.98 and 191,346.59 is: 264,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,228.65 : 430,885.98 = 191,346.59 : x
  2. Step 2: Convert to fraction form
    312,228.65/430,885.98 = 191,346.59/x
  3. Step 3: Cross multiply
    312,228.65x = 430,885.98 × 191,346.59
  4. Step 4: Simplify right side
    312,228.65x = 82,448,564,029.02
  5. Step 5: Solve for x
    x = 82,448,564,029.02/312,228.65
  6. Step 6: Final answer
    x = 264,064.70

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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.