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Finding the Fourth Proportional to 623,665.88, 860,607.36 and 351,800.60

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Solution

The fourth proportional to 623,665.88, 860,607.36 and 351,800.60 is: 485,455.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,665.88 : 860,607.36 = 351,800.60 : x
  2. Step 2: Convert to fraction form
    623,665.88/860,607.36 = 351,800.60/x
  3. Step 3: Cross multiply
    623,665.88x = 860,607.36 × 351,800.60
  4. Step 4: Simplify right side
    623,665.88x = 302,762,181,309.38
  5. Step 5: Solve for x
    x = 302,762,181,309.38/623,665.88
  6. Step 6: Final answer
    x = 485,455.74

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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.