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Finding the Fourth Proportional to 312,178.01, 430,805.63 and 168,938.06

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Solution

The fourth proportional to 312,178.01, 430,805.63 and 168,938.06 is: 233,134.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,178.01 : 430,805.63 = 168,938.06 : x
  2. Step 2: Convert to fraction form
    312,178.01/430,805.63 = 168,938.06/x
  3. Step 3: Cross multiply
    312,178.01x = 430,805.63 × 168,938.06
  4. Step 4: Simplify right side
    312,178.01x = 72,779,466,524.59
  5. Step 5: Solve for x
    x = 72,779,466,524.59/312,178.01
  6. Step 6: Final answer
    x = 233,134.51

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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.