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Finding the Fourth Proportional to 623,878.29, 860,991.90 and 351,846.93

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Solution

The fourth proportional to 623,878.29, 860,991.90 and 351,846.93 is: 485,571.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,878.29 : 860,991.90 = 351,846.93 : x
  2. Step 2: Convert to fraction form
    623,878.29/860,991.90 = 351,846.93/x
  3. Step 3: Cross multiply
    623,878.29x = 860,991.90 × 351,846.93
  4. Step 4: Simplify right side
    623,878.29x = 302,937,353,541.15
  5. Step 5: Solve for x
    x = 302,937,353,541.15/623,878.29
  6. Step 6: Final answer
    x = 485,571.24

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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.