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Finding the Fourth Proportional to 19,605.84, 29,409.88 and 5,564.76

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Solution

The fourth proportional to 19,605.84, 29,409.88 and 5,564.76 is: 8,347.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,605.84 : 29,409.88 = 5,564.76 : x
  2. Step 2: Convert to fraction form
    19,605.84/29,409.88 = 5,564.76/x
  3. Step 3: Cross multiply
    19,605.84x = 29,409.88 × 5,564.76
  4. Step 4: Simplify right side
    19,605.84x = 163,658,896.01
  5. Step 5: Solve for x
    x = 163,658,896.01/19,605.84
  6. Step 6: Final answer
    x = 8,347.46

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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.