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Finding the Fourth Proportional to 569,712.33, 786,171.20 and 311,538.11

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Solution

The fourth proportional to 569,712.33, 786,171.20 and 311,538.11 is: 429,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,712.33 : 786,171.20 = 311,538.11 : x
  2. Step 2: Convert to fraction form
    569,712.33/786,171.20 = 311,538.11/x
  3. Step 3: Cross multiply
    569,712.33x = 786,171.20 × 311,538.11
  4. Step 4: Simplify right side
    569,712.33x = 244,922,284,295.89
  5. Step 5: Solve for x
    x = 244,922,284,295.89/569,712.33
  6. Step 6: Final answer
    x = 429,905.18

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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.