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Finding the Fourth Proportional to 614,577.40, 921,995.70 and 259,408.60

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Solution

The fourth proportional to 614,577.40, 921,995.70 and 259,408.60 is: 389,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,577.40 : 921,995.70 = 259,408.60 : x
  2. Step 2: Convert to fraction form
    614,577.40/921,995.70 = 259,408.60/x
  3. Step 3: Cross multiply
    614,577.40x = 921,995.70 × 259,408.60
  4. Step 4: Simplify right side
    614,577.40x = 239,173,613,743.02
  5. Step 5: Solve for x
    x = 239,173,613,743.02/614,577.40
  6. Step 6: Final answer
    x = 389,167.60

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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.