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Finding the Fourth Proportional to 35,390.40, 53,164.80 and 29,558.40

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Solution

The fourth proportional to 35,390.40, 53,164.80 and 29,558.40 is: 44,403.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,390.40 : 53,164.80 = 29,558.40 : x
  2. Step 2: Convert to fraction form
    35,390.40/53,164.80 = 29,558.40/x
  3. Step 3: Cross multiply
    35,390.40x = 53,164.80 × 29,558.40
  4. Step 4: Simplify right side
    35,390.40x = 1,571,466,424.32
  5. Step 5: Solve for x
    x = 1,571,466,424.32/35,390.40
  6. Step 6: Final answer
    x = 44,403.75

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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.