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Finding the Fourth Proportional to 623,757.32, 860,749.40 and 351,808.98

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Solution

The fourth proportional to 623,757.32, 860,749.40 and 351,808.98 is: 485,476.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,757.32 : 860,749.40 = 351,808.98 : x
  2. Step 2: Convert to fraction form
    623,757.32/860,749.40 = 351,808.98/x
  3. Step 3: Cross multiply
    623,757.32x = 860,749.40 × 351,808.98
  4. Step 4: Simplify right side
    623,757.32x = 302,819,366,690.57
  5. Step 5: Solve for x
    x = 302,819,366,690.57/623,757.32
  6. Step 6: Final answer
    x = 485,476.26

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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.