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Finding the Fourth Proportional to 35,490.76, 53,248.44 and 15,783.16

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Solution

The fourth proportional to 35,490.76, 53,248.44 and 15,783.16 is: 23,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,490.76 : 53,248.44 = 15,783.16 : x
  2. Step 2: Convert to fraction form
    35,490.76/53,248.44 = 15,783.16/x
  3. Step 3: Cross multiply
    35,490.76x = 53,248.44 × 15,783.16
  4. Step 4: Simplify right side
    35,490.76x = 840,428,648.27
  5. Step 5: Solve for x
    x = 840,428,648.27/35,490.76
  6. Step 6: Final answer
    x = 23,680.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.