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Finding the Fourth Proportional to 46,553.40, 69,848.79 and 21,264.90

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Solution

The fourth proportional to 46,553.40, 69,848.79 and 21,264.90 is: 31,905.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,553.40 : 69,848.79 = 21,264.90 : x
  2. Step 2: Convert to fraction form
    46,553.40/69,848.79 = 21,264.90/x
  3. Step 3: Cross multiply
    46,553.40x = 69,848.79 × 21,264.90
  4. Step 4: Simplify right side
    46,553.40x = 1,485,327,534.47
  5. Step 5: Solve for x
    x = 1,485,327,534.47/46,553.40
  6. Step 6: Final answer
    x = 31,905.89

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1.5x scale

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.