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Finding the Fourth Proportional to 623,701.42, 860,707.78 and 351,768.76

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Solution

The fourth proportional to 623,701.42, 860,707.78 and 351,768.76 is: 485,440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,701.42 : 860,707.78 = 351,768.76 : x
  2. Step 2: Convert to fraction form
    623,701.42/860,707.78 = 351,768.76/x
  3. Step 3: Cross multiply
    623,701.42x = 860,707.78 × 351,768.76
  4. Step 4: Simplify right side
    623,701.42x = 302,770,108,492.95
  5. Step 5: Solve for x
    x = 302,770,108,492.95/623,701.42
  6. Step 6: Final answer
    x = 485,440.79

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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.