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Finding the Fourth Proportional to 102,615.30, 153,938.34 and 36,043.70

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Solution

The fourth proportional to 102,615.30, 153,938.34 and 36,043.70 is: 54,070.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,615.30 : 153,938.34 = 36,043.70 : x
  2. Step 2: Convert to fraction form
    102,615.30/153,938.34 = 36,043.70/x
  3. Step 3: Cross multiply
    102,615.30x = 153,938.34 × 36,043.70
  4. Step 4: Simplify right side
    102,615.30x = 5,548,507,345.46
  5. Step 5: Solve for x
    x = 5,548,507,345.46/102,615.30
  6. Step 6: Final answer
    x = 54,070.96

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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.