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Finding the Fourth Proportional to 58,574.93, 87,844.21 and 21,130.13

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Solution

The fourth proportional to 58,574.93, 87,844.21 and 21,130.13 is: 31,688.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,574.93 : 87,844.21 = 21,130.13 : x
  2. Step 2: Convert to fraction form
    58,574.93/87,844.21 = 21,130.13/x
  3. Step 3: Cross multiply
    58,574.93x = 87,844.21 × 21,130.13
  4. Step 4: Simplify right side
    58,574.93x = 1,856,159,773.55
  5. Step 5: Solve for x
    x = 1,856,159,773.55/58,574.93
  6. Step 6: Final answer
    x = 31,688.64

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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.