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Finding the Fourth Proportional to 573,941.20, 860,911.80 and 209,230.16

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Solution

The fourth proportional to 573,941.20, 860,911.80 and 209,230.16 is: 313,845.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,941.20 : 860,911.80 = 209,230.16 : x
  2. Step 2: Convert to fraction form
    573,941.20/860,911.80 = 209,230.16/x
  3. Step 3: Cross multiply
    573,941.20x = 860,911.80 × 209,230.16
  4. Step 4: Simplify right side
    573,941.20x = 180,128,712,875.28
  5. Step 5: Solve for x
    x = 180,128,712,875.28/573,941.20
  6. Step 6: Final answer
    x = 313,845.24

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.