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Finding the Fourth Proportional to 623,799.81, 860,807.88 and 351,851.49

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Solution

The fourth proportional to 623,799.81, 860,807.88 and 351,851.49 is: 485,534.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,799.81 : 860,807.88 = 351,851.49 : x
  2. Step 2: Convert to fraction form
    623,799.81/860,807.88 = 351,851.49/x
  3. Step 3: Cross multiply
    623,799.81x = 860,807.88 × 351,851.49
  4. Step 4: Simplify right side
    623,799.81x = 302,876,535,181.74
  5. Step 5: Solve for x
    x = 302,876,535,181.74/623,799.81
  6. Step 6: Final answer
    x = 485,534.83

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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.