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Finding the Fourth Proportional to 52,915.44, 79,482.90 and 42,795.19

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Solution

The fourth proportional to 52,915.44, 79,482.90 and 42,795.19 is: 64,281.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,915.44 : 79,482.90 = 42,795.19 : x
  2. Step 2: Convert to fraction form
    52,915.44/79,482.90 = 42,795.19/x
  3. Step 3: Cross multiply
    52,915.44x = 79,482.90 × 42,795.19
  4. Step 4: Simplify right side
    52,915.44x = 3,401,485,807.25
  5. Step 5: Solve for x
    x = 3,401,485,807.25/52,915.44
  6. Step 6: Final answer
    x = 64,281.54

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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.