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Finding the Fourth Proportional to 208,158.66, 287,264.18 and 127,630.58

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Solution

The fourth proportional to 208,158.66, 287,264.18 and 127,630.58 is: 176,133.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,158.66 : 287,264.18 = 127,630.58 : x
  2. Step 2: Convert to fraction form
    208,158.66/287,264.18 = 127,630.58/x
  3. Step 3: Cross multiply
    208,158.66x = 287,264.18 × 127,630.58
  4. Step 4: Simplify right side
    208,158.66x = 36,663,693,906.62
  5. Step 5: Solve for x
    x = 36,663,693,906.62/208,158.66
  6. Step 6: Final answer
    x = 176,133.41

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1.5x scale

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.