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Finding the Fourth Proportional to 10,953.54, 16,430.55 and 3,558

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Solution

The fourth proportional to 10,953.54, 16,430.55 and 3,558 is: 5,337.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,953.54 : 16,430.55 = 3,558 : x
  2. Step 2: Convert to fraction form
    10,953.54/16,430.55 = 3,558/x
  3. Step 3: Cross multiply
    10,953.54x = 16,430.55 × 3,558
  4. Step 4: Simplify right side
    10,953.54x = 58,459,896.90
  5. Step 5: Solve for x
    x = 58,459,896.90/10,953.54
  6. Step 6: Final answer
    x = 5,337.08

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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.