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Finding the Fourth Proportional to 623,795.72, 860,818.73 and 351,859.68

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Solution

The fourth proportional to 623,795.72, 860,818.73 and 351,859.68 is: 485,555.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,795.72 : 860,818.73 = 351,859.68 : x
  2. Step 2: Convert to fraction form
    623,795.72/860,818.73 = 351,859.68/x
  3. Step 3: Cross multiply
    623,795.72x = 860,818.73 × 351,859.68
  4. Step 4: Simplify right side
    623,795.72x = 302,887,401,116.51
  5. Step 5: Solve for x
    x = 302,887,401,116.51/623,795.72
  6. Step 6: Final answer
    x = 485,555.44

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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.