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Finding the Fourth Proportional to 7,015.60, 9,681.36 and 4,362

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Solution

The fourth proportional to 7,015.60, 9,681.36 and 4,362 is: 6,019.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.60 : 9,681.36 = 4,362 : x
  2. Step 2: Convert to fraction form
    7,015.60/9,681.36 = 4,362/x
  3. Step 3: Cross multiply
    7,015.60x = 9,681.36 × 4,362
  4. Step 4: Simplify right side
    7,015.60x = 42,230,092.32
  5. Step 5: Solve for x
    x = 42,230,092.32/7,015.60
  6. Step 6: Final answer
    x = 6,019.46

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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.