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Finding the Fourth Proportional to 623,784.87, 860,822.10 and 351,851.92

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Solution

The fourth proportional to 623,784.87, 860,822.10 and 351,851.92 is: 485,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,784.87 : 860,822.10 = 351,851.92 : x
  2. Step 2: Convert to fraction form
    623,784.87/860,822.10 = 351,851.92/x
  3. Step 3: Cross multiply
    623,784.87x = 860,822.10 × 351,851.92
  4. Step 4: Simplify right side
    623,784.87x = 302,881,906,511.38
  5. Step 5: Solve for x
    x = 302,881,906,511.38/623,784.87
  6. Step 6: Final answer
    x = 485,555.07

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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.