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Finding the Fourth Proportional to 208,156.62, 287,263.09 and 127,568.57

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Solution

The fourth proportional to 208,156.62, 287,263.09 and 127,568.57 is: 176,048.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,156.62 : 287,263.09 = 127,568.57 : x
  2. Step 2: Convert to fraction form
    208,156.62/287,263.09 = 127,568.57/x
  3. Step 3: Cross multiply
    208,156.62x = 287,263.09 × 127,568.57
  4. Step 4: Simplify right side
    208,156.62x = 36,645,742,004.32
  5. Step 5: Solve for x
    x = 36,645,742,004.32/208,156.62
  6. Step 6: Final answer
    x = 176,048.89

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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.