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Finding the Fourth Proportional to 369,339.78, 554,258.94 and 144,672.34

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Solution

The fourth proportional to 369,339.78, 554,258.94 and 144,672.34 is: 217,106.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,339.78 : 554,258.94 = 144,672.34 : x
  2. Step 2: Convert to fraction form
    369,339.78/554,258.94 = 144,672.34/x
  3. Step 3: Cross multiply
    369,339.78x = 554,258.94 × 144,672.34
  4. Step 4: Simplify right side
    369,339.78x = 80,185,938,316.55
  5. Step 5: Solve for x
    x = 80,185,938,316.55/369,339.78
  6. Step 6: Final answer
    x = 217,106.15

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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.