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Finding the Fourth Proportional to 289,407.60, 434,111.40 and 194,929.20

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Solution

The fourth proportional to 289,407.60, 434,111.40 and 194,929.20 is: 292,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,407.60 : 434,111.40 = 194,929.20 : x
  2. Step 2: Convert to fraction form
    289,407.60/434,111.40 = 194,929.20/x
  3. Step 3: Cross multiply
    289,407.60x = 434,111.40 × 194,929.20
  4. Step 4: Simplify right side
    289,407.60x = 84,620,987,912.88
  5. Step 5: Solve for x
    x = 84,620,987,912.88/289,407.60
  6. Step 6: Final answer
    x = 292,393.80

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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.