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Finding the Fourth Proportional to 623,714.40, 860,630.40 and 351,770.40

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Solution

The fourth proportional to 623,714.40, 860,630.40 and 351,770.40 is: 485,389.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,714.40 : 860,630.40 = 351,770.40 : x
  2. Step 2: Convert to fraction form
    623,714.40/860,630.40 = 351,770.40/x
  3. Step 3: Cross multiply
    623,714.40x = 860,630.40 × 351,770.40
  4. Step 4: Simplify right side
    623,714.40x = 302,744,300,060.16
  5. Step 5: Solve for x
    x = 302,744,300,060.16/623,714.40
  6. Step 6: Final answer
    x = 485,389.31

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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.