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Finding the Fourth Proportional to 19,615.75, 29,436.86 and 7,303.75

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Solution

The fourth proportional to 19,615.75, 29,436.86 and 7,303.75 is: 10,960.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,615.75 : 29,436.86 = 7,303.75 : x
  2. Step 2: Convert to fraction form
    19,615.75/29,436.86 = 7,303.75/x
  3. Step 3: Cross multiply
    19,615.75x = 29,436.86 × 7,303.75
  4. Step 4: Simplify right side
    19,615.75x = 214,999,429.71
  5. Step 5: Solve for x
    x = 214,999,429.71/19,615.75
  6. Step 6: Final answer
    x = 10,960.55

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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.