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Finding the Fourth Proportional to 312,177.76, 430,805.28 and 168,937.81

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Solution

The fourth proportional to 312,177.76, 430,805.28 and 168,937.81 is: 233,134.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,177.76 : 430,805.28 = 168,937.81 : x
  2. Step 2: Convert to fraction form
    312,177.76/430,805.28 = 168,937.81/x
  3. Step 3: Cross multiply
    312,177.76x = 430,805.28 × 168,937.81
  4. Step 4: Simplify right side
    312,177.76x = 72,779,300,539.64
  5. Step 5: Solve for x
    x = 72,779,300,539.64/312,177.76
  6. Step 6: Final answer
    x = 233,134.16

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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.