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Finding the Fourth Proportional to 7,059.70, 9,905.45 and 7,059.70

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Solution

The fourth proportional to 7,059.70, 9,905.45 and 7,059.70 is: 9,905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,059.70 : 9,905.45 = 7,059.70 : x
  2. Step 2: Convert to fraction form
    7,059.70/9,905.45 = 7,059.70/x
  3. Step 3: Cross multiply
    7,059.70x = 9,905.45 × 7,059.70
  4. Step 4: Simplify right side
    7,059.70x = 69,929,505.37
  5. Step 5: Solve for x
    x = 69,929,505.37/7,059.70
  6. Step 6: Final answer
    x = 9,905.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.