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Finding the Fourth Proportional to 58,620.26, 80,830.54 and 42,455.60

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Solution

The fourth proportional to 58,620.26, 80,830.54 and 42,455.60 is: 58,541.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,620.26 : 80,830.54 = 42,455.60 : x
  2. Step 2: Convert to fraction form
    58,620.26/80,830.54 = 42,455.60/x
  3. Step 3: Cross multiply
    58,620.26x = 80,830.54 × 42,455.60
  4. Step 4: Simplify right side
    58,620.26x = 3,431,709,074.02
  5. Step 5: Solve for x
    x = 3,431,709,074.02/58,620.26
  6. Step 6: Final answer
    x = 58,541.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.