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Finding the Fourth Proportional to 208,166.58, 287,275.19 and 127,638.51

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Solution

The fourth proportional to 208,166.58, 287,275.19 and 127,638.51 is: 176,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,166.58 : 287,275.19 = 127,638.51 : x
  2. Step 2: Convert to fraction form
    208,166.58/287,275.19 = 127,638.51/x
  3. Step 3: Cross multiply
    208,166.58x = 287,275.19 × 127,638.51
  4. Step 4: Simplify right side
    208,166.58x = 36,667,376,573.37
  5. Step 5: Solve for x
    x = 36,667,376,573.37/208,166.58
  6. Step 6: Final answer
    x = 176,144.40

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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.