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Finding the Fourth Proportional to 19,695.60, 29,534.94 and 7,211.52

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Solution

The fourth proportional to 19,695.60, 29,534.94 and 7,211.52 is: 10,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,695.60 : 29,534.94 = 7,211.52 : x
  2. Step 2: Convert to fraction form
    19,695.60/29,534.94 = 7,211.52/x
  3. Step 3: Cross multiply
    19,695.60x = 29,534.94 × 7,211.52
  4. Step 4: Simplify right side
    19,695.60x = 212,991,810.51
  5. Step 5: Solve for x
    x = 212,991,810.51/19,695.60
  6. Step 6: Final answer
    x = 10,814.18

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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.