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Finding the Fourth Proportional to 58,230.80, 87,346.20 and 51,779.60

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Solution

The fourth proportional to 58,230.80, 87,346.20 and 51,779.60 is: 77,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,230.80 : 87,346.20 = 51,779.60 : x
  2. Step 2: Convert to fraction form
    58,230.80/87,346.20 = 51,779.60/x
  3. Step 3: Cross multiply
    58,230.80x = 87,346.20 × 51,779.60
  4. Step 4: Simplify right side
    58,230.80x = 4,522,751,297.52
  5. Step 5: Solve for x
    x = 4,522,751,297.52/58,230.80
  6. Step 6: Final answer
    x = 77,669.40

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1.5x scale

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.