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Finding the Fourth Proportional to 58,488.70, 80,619.60 and 45,719.32

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Solution

The fourth proportional to 58,488.70, 80,619.60 and 45,719.32 is: 63,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,488.70 : 80,619.60 = 45,719.32 : x
  2. Step 2: Convert to fraction form
    58,488.70/80,619.60 = 45,719.32/x
  3. Step 3: Cross multiply
    58,488.70x = 80,619.60 × 45,719.32
  4. Step 4: Simplify right side
    58,488.70x = 3,685,873,290.67
  5. Step 5: Solve for x
    x = 3,685,873,290.67/58,488.70
  6. Step 6: Final answer
    x = 63,018.55

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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.