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Finding the Fourth Proportional to 7,174.71, 9,901.53 and 4,030.89

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Solution

The fourth proportional to 7,174.71, 9,901.53 and 4,030.89 is: 5,562.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,174.71 : 9,901.53 = 4,030.89 : x
  2. Step 2: Convert to fraction form
    7,174.71/9,901.53 = 4,030.89/x
  3. Step 3: Cross multiply
    7,174.71x = 9,901.53 × 4,030.89
  4. Step 4: Simplify right side
    7,174.71x = 39,911,978.26
  5. Step 5: Solve for x
    x = 39,911,978.26/7,174.71
  6. Step 6: Final answer
    x = 5,562.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.