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Finding the Fourth Proportional to 126,603.96, 189,931.50 and 56,483.28

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Solution

The fourth proportional to 126,603.96, 189,931.50 and 56,483.28 is: 84,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,603.96 : 189,931.50 = 56,483.28 : x
  2. Step 2: Convert to fraction form
    126,603.96/189,931.50 = 56,483.28/x
  3. Step 3: Cross multiply
    126,603.96x = 189,931.50 × 56,483.28
  4. Step 4: Simplify right side
    126,603.96x = 10,727,954,095.32
  5. Step 5: Solve for x
    x = 10,727,954,095.32/126,603.96
  6. Step 6: Final answer
    x = 84,736.32

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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.