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Finding the Fourth Proportional to 60,606.40, 90,893.40 and 21,159.40

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Solution

The fourth proportional to 60,606.40, 90,893.40 and 21,159.40 is: 31,733.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,606.40 : 90,893.40 = 21,159.40 : x
  2. Step 2: Convert to fraction form
    60,606.40/90,893.40 = 21,159.40/x
  3. Step 3: Cross multiply
    60,606.40x = 90,893.40 × 21,159.40
  4. Step 4: Simplify right side
    60,606.40x = 1,923,249,807.96
  5. Step 5: Solve for x
    x = 1,923,249,807.96/60,606.40
  6. Step 6: Final answer
    x = 31,733.44

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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.