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Finding the Fourth Proportional to 129,812.60, 194,783.70 and 73,695.80

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Solution

The fourth proportional to 129,812.60, 194,783.70 and 73,695.80 is: 110,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,812.60 : 194,783.70 = 73,695.80 : x
  2. Step 2: Convert to fraction form
    129,812.60/194,783.70 = 73,695.80/x
  3. Step 3: Cross multiply
    129,812.60x = 194,783.70 × 73,695.80
  4. Step 4: Simplify right side
    129,812.60x = 14,354,740,598.46
  5. Step 5: Solve for x
    x = 14,354,740,598.46/129,812.60
  6. Step 6: Final answer
    x = 110,580.49

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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.