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Finding the Fourth Proportional to 194,646.60, 291,969.90 and 70,000.20

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Solution

The fourth proportional to 194,646.60, 291,969.90 and 70,000.20 is: 105,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,646.60 : 291,969.90 = 70,000.20 : x
  2. Step 2: Convert to fraction form
    194,646.60/291,969.90 = 70,000.20/x
  3. Step 3: Cross multiply
    194,646.60x = 291,969.90 × 70,000.20
  4. Step 4: Simplify right side
    194,646.60x = 20,437,951,393.98
  5. Step 5: Solve for x
    x = 20,437,951,393.98/194,646.60
  6. Step 6: Final answer
    x = 105,000.30

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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.