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Finding the Fourth Proportional to 113,990.87, 157,315.53 and 63,002.50

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Solution

The fourth proportional to 113,990.87, 157,315.53 and 63,002.50 is: 86,947.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,990.87 : 157,315.53 = 63,002.50 : x
  2. Step 2: Convert to fraction form
    113,990.87/157,315.53 = 63,002.50/x
  3. Step 3: Cross multiply
    113,990.87x = 157,315.53 × 63,002.50
  4. Step 4: Simplify right side
    113,990.87x = 9,911,271,285.54
  5. Step 5: Solve for x
    x = 9,911,271,285.54/113,990.87
  6. Step 6: Final answer
    x = 86,947.94

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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.