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Finding the Fourth Proportional to 113,802.70, 170,576.76 and 42,656.86

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Solution

The fourth proportional to 113,802.70, 170,576.76 and 42,656.86 is: 63,937.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,802.70 : 170,576.76 = 42,656.86 : x
  2. Step 2: Convert to fraction form
    113,802.70/170,576.76 = 42,656.86/x
  3. Step 3: Cross multiply
    113,802.70x = 170,576.76 × 42,656.86
  4. Step 4: Simplify right side
    113,802.70x = 7,276,268,970.57
  5. Step 5: Solve for x
    x = 7,276,268,970.57/113,802.70
  6. Step 6: Final answer
    x = 63,937.58

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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.