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Finding the Fourth Proportional to 623,812.35, 860,841.63 and 351,876.18

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Solution

The fourth proportional to 623,812.35, 860,841.63 and 351,876.18 is: 485,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,812.35 : 860,841.63 = 351,876.18 : x
  2. Step 2: Convert to fraction form
    623,812.35/860,841.63 = 351,876.18/x
  3. Step 3: Cross multiply
    623,812.35x = 860,841.63 × 351,876.18
  4. Step 4: Simplify right side
    623,812.35x = 302,909,664,349.37
  5. Step 5: Solve for x
    x = 302,909,664,349.37/623,812.35
  6. Step 6: Final answer
    x = 485,578.18

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Double scale
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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.