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Finding the Fourth Proportional to 156,693.80, 235,040.70 and 153,583.40

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Solution

The fourth proportional to 156,693.80, 235,040.70 and 153,583.40 is: 230,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,693.80 : 235,040.70 = 153,583.40 : x
  2. Step 2: Convert to fraction form
    156,693.80/235,040.70 = 153,583.40/x
  3. Step 3: Cross multiply
    156,693.80x = 235,040.70 × 153,583.40
  4. Step 4: Simplify right side
    156,693.80x = 36,098,349,844.38
  5. Step 5: Solve for x
    x = 36,098,349,844.38/156,693.80
  6. Step 6: Final answer
    x = 230,375.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.