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Finding the Fourth Proportional to 111,510.62, 153,886.95 and 63,112.55

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Solution

The fourth proportional to 111,510.62, 153,886.95 and 63,112.55 is: 87,096.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,510.62 : 153,886.95 = 63,112.55 : x
  2. Step 2: Convert to fraction form
    111,510.62/153,886.95 = 63,112.55/x
  3. Step 3: Cross multiply
    111,510.62x = 153,886.95 × 63,112.55
  4. Step 4: Simplify right side
    111,510.62x = 9,712,198,210.94
  5. Step 5: Solve for x
    x = 9,712,198,210.94/111,510.62
  6. Step 6: Final answer
    x = 87,096.62

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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.