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Finding the Fourth Proportional to 651,566.56, 978,424.71 and 439,695.67

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Solution

The fourth proportional to 651,566.56, 978,424.71 and 439,695.67 is: 660,268.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,566.56 : 978,424.71 = 439,695.67 : x
  2. Step 2: Convert to fraction form
    651,566.56/978,424.71 = 439,695.67/x
  3. Step 3: Cross multiply
    651,566.56x = 978,424.71 × 439,695.67
  4. Step 4: Simplify right side
    651,566.56x = 430,209,108,408.01
  5. Step 5: Solve for x
    x = 430,209,108,408.01/651,566.56
  6. Step 6: Final answer
    x = 660,268.86

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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.