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Finding the Fourth Proportional to 58,286.80, 87,430.20 and 45,602.20

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Solution

The fourth proportional to 58,286.80, 87,430.20 and 45,602.20 is: 68,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,286.80 : 87,430.20 = 45,602.20 : x
  2. Step 2: Convert to fraction form
    58,286.80/87,430.20 = 45,602.20/x
  3. Step 3: Cross multiply
    58,286.80x = 87,430.20 × 45,602.20
  4. Step 4: Simplify right side
    58,286.80x = 3,987,009,466.44
  5. Step 5: Solve for x
    x = 3,987,009,466.44/58,286.80
  6. Step 6: Final answer
    x = 68,403.30

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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.