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Finding the Fourth Proportional to 61,339.40, 91,561.46 and 52,630.28

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Solution

The fourth proportional to 61,339.40, 91,561.46 and 52,630.28 is: 78,561.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,339.40 : 91,561.46 = 52,630.28 : x
  2. Step 2: Convert to fraction form
    61,339.40/91,561.46 = 52,630.28/x
  3. Step 3: Cross multiply
    61,339.40x = 91,561.46 × 52,630.28
  4. Step 4: Simplify right side
    61,339.40x = 4,818,905,277.01
  5. Step 5: Solve for x
    x = 4,818,905,277.01/61,339.40
  6. Step 6: Final answer
    x = 78,561.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.