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Finding the Fourth Proportional to 58,472.91, 87,643.71 and 28,911.51

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Solution

The fourth proportional to 58,472.91, 87,643.71 and 28,911.51 is: 43,334.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,472.91 : 87,643.71 = 28,911.51 : x
  2. Step 2: Convert to fraction form
    58,472.91/87,643.71 = 28,911.51/x
  3. Step 3: Cross multiply
    58,472.91x = 87,643.71 × 28,911.51
  4. Step 4: Simplify right side
    58,472.91x = 2,533,911,998.10
  5. Step 5: Solve for x
    x = 2,533,911,998.10/58,472.91
  6. Step 6: Final answer
    x = 43,334.80

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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.