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Finding the Fourth Proportional to 133,345.61, 183,930.23 and 85,523.21

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Solution

The fourth proportional to 133,345.61, 183,930.23 and 85,523.21 is: 117,966.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,345.61 : 183,930.23 = 85,523.21 : x
  2. Step 2: Convert to fraction form
    133,345.61/183,930.23 = 85,523.21/x
  3. Step 3: Cross multiply
    133,345.61x = 183,930.23 × 85,523.21
  4. Step 4: Simplify right side
    133,345.61x = 15,730,303,685.64
  5. Step 5: Solve for x
    x = 15,730,303,685.64/133,345.61
  6. Step 6: Final answer
    x = 117,966.42

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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.