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Finding the Fourth Proportional to 10,602.60, 15,892.80 and 5,053.32

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Solution

The fourth proportional to 10,602.60, 15,892.80 and 5,053.32 is: 7,574.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,602.60 : 15,892.80 = 5,053.32 : x
  2. Step 2: Convert to fraction form
    10,602.60/15,892.80 = 5,053.32/x
  3. Step 3: Cross multiply
    10,602.60x = 15,892.80 × 5,053.32
  4. Step 4: Simplify right side
    10,602.60x = 80,311,404.10
  5. Step 5: Solve for x
    x = 80,311,404.10/10,602.60
  6. Step 6: Final answer
    x = 7,574.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.