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Finding the Fourth Proportional to 58,361.71, 87,569.90 and 28,763.40

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Solution

The fourth proportional to 58,361.71, 87,569.90 and 28,763.40 is: 43,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,361.71 : 87,569.90 = 28,763.40 : x
  2. Step 2: Convert to fraction form
    58,361.71/87,569.90 = 28,763.40/x
  3. Step 3: Cross multiply
    58,361.71x = 87,569.90 × 28,763.40
  4. Step 4: Simplify right side
    58,361.71x = 2,518,807,917.84
  5. Step 5: Solve for x
    x = 2,518,807,917.84/58,361.71
  6. Step 6: Final answer
    x = 43,158.57

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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.