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Finding the Fourth Proportional to 60,730.96, 83,814.66 and 45,390.82

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Solution

The fourth proportional to 60,730.96, 83,814.66 and 45,390.82 is: 62,643.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,730.96 : 83,814.66 = 45,390.82 : x
  2. Step 2: Convert to fraction form
    60,730.96/83,814.66 = 45,390.82/x
  3. Step 3: Cross multiply
    60,730.96x = 83,814.66 × 45,390.82
  4. Step 4: Simplify right side
    60,730.96x = 3,804,415,918.47
  5. Step 5: Solve for x
    x = 3,804,415,918.47/60,730.96
  6. Step 6: Final answer
    x = 62,643.76

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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.