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Finding the Fourth Proportional to 623,519.91, 860,384.36 and 351,571.60

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Solution

The fourth proportional to 623,519.91, 860,384.36 and 351,571.60 is: 485,127.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,519.91 : 860,384.36 = 351,571.60 : x
  2. Step 2: Convert to fraction form
    623,519.91/860,384.36 = 351,571.60/x
  3. Step 3: Cross multiply
    623,519.91x = 860,384.36 × 351,571.60
  4. Step 4: Simplify right side
    623,519.91x = 302,486,708,014.59
  5. Step 5: Solve for x
    x = 302,486,708,014.59/623,519.91
  6. Step 6: Final answer
    x = 485,127.58

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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.