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Finding the Fourth Proportional to 61,749.76, 85,167.65 and 53,150.58

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Solution

The fourth proportional to 61,749.76, 85,167.65 and 53,150.58 is: 73,307.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,749.76 : 85,167.65 = 53,150.58 : x
  2. Step 2: Convert to fraction form
    61,749.76/85,167.65 = 53,150.58/x
  3. Step 3: Cross multiply
    61,749.76x = 85,167.65 × 53,150.58
  4. Step 4: Simplify right side
    61,749.76x = 4,526,709,303.15
  5. Step 5: Solve for x
    x = 4,526,709,303.15/61,749.76
  6. Step 6: Final answer
    x = 73,307.32

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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.