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Finding the Fourth Proportional to 265,428.88, 366,650.16 and 212,087.92

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Solution

The fourth proportional to 265,428.88, 366,650.16 and 212,087.92 is: 292,967.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,428.88 : 366,650.16 = 212,087.92 : x
  2. Step 2: Convert to fraction form
    265,428.88/366,650.16 = 212,087.92/x
  3. Step 3: Cross multiply
    265,428.88x = 366,650.16 × 212,087.92
  4. Step 4: Simplify right side
    265,428.88x = 77,762,069,802.07
  5. Step 5: Solve for x
    x = 77,762,069,802.07/265,428.88
  6. Step 6: Final answer
    x = 292,967.63

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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.