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Finding the Fourth Proportional to 21,060.92, 29,068.62 and 14,362.54

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Solution

The fourth proportional to 21,060.92, 29,068.62 and 14,362.54 is: 19,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.92 : 29,068.62 = 14,362.54 : x
  2. Step 2: Convert to fraction form
    21,060.92/29,068.62 = 14,362.54/x
  3. Step 3: Cross multiply
    21,060.92x = 29,068.62 × 14,362.54
  4. Step 4: Simplify right side
    21,060.92x = 417,499,072.15
  5. Step 5: Solve for x
    x = 417,499,072.15/21,060.92
  6. Step 6: Final answer
    x = 19,823.40

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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.