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Finding the Fourth Proportional to 355,018.54, 532,602.63 and 115,113.74

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Solution

The fourth proportional to 355,018.54, 532,602.63 and 115,113.74 is: 172,694.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,018.54 : 532,602.63 = 115,113.74 : x
  2. Step 2: Convert to fraction form
    355,018.54/532,602.63 = 115,113.74/x
  3. Step 3: Cross multiply
    355,018.54x = 532,602.63 × 115,113.74
  4. Step 4: Simplify right side
    355,018.54x = 61,309,880,673.14
  5. Step 5: Solve for x
    x = 61,309,880,673.14/355,018.54
  6. Step 6: Final answer
    x = 172,694.87

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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.