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Finding the Fourth Proportional to 34,809.78, 48,036.78 and 19,702.17

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Solution

The fourth proportional to 34,809.78, 48,036.78 and 19,702.17 is: 27,188.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,809.78 : 48,036.78 = 19,702.17 : x
  2. Step 2: Convert to fraction form
    34,809.78/48,036.78 = 19,702.17/x
  3. Step 3: Cross multiply
    34,809.78x = 48,036.78 × 19,702.17
  4. Step 4: Simplify right side
    34,809.78x = 946,428,805.81
  5. Step 5: Solve for x
    x = 946,428,805.81/34,809.78
  6. Step 6: Final answer
    x = 27,188.59

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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.