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Finding the Fourth Proportional to 9,307.48, 12,844.02 and 5,115.46

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Solution

The fourth proportional to 9,307.48, 12,844.02 and 5,115.46 is: 7,059.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,307.48 : 12,844.02 = 5,115.46 : x
  2. Step 2: Convert to fraction form
    9,307.48/12,844.02 = 5,115.46/x
  3. Step 3: Cross multiply
    9,307.48x = 12,844.02 × 5,115.46
  4. Step 4: Simplify right side
    9,307.48x = 65,703,070.55
  5. Step 5: Solve for x
    x = 65,703,070.55/9,307.48
  6. Step 6: Final answer
    x = 7,059.17

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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.