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Finding the Fourth Proportional to 7,905.93, 10,909.74 and 4,368.91

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Solution

The fourth proportional to 7,905.93, 10,909.74 and 4,368.91 is: 6,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.93 : 10,909.74 = 4,368.91 : x
  2. Step 2: Convert to fraction form
    7,905.93/10,909.74 = 4,368.91/x
  3. Step 3: Cross multiply
    7,905.93x = 10,909.74 × 4,368.91
  4. Step 4: Simplify right side
    7,905.93x = 47,663,672.18
  5. Step 5: Solve for x
    x = 47,663,672.18/7,905.93
  6. Step 6: Final answer
    x = 6,028.85

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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.