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Finding the Fourth Proportional to 70,191.18, 105,359.69 and 40,666.70

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Solution

The fourth proportional to 70,191.18, 105,359.69 and 40,666.70 is: 61,042.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,191.18 : 105,359.69 = 40,666.70 : x
  2. Step 2: Convert to fraction form
    70,191.18/105,359.69 = 40,666.70/x
  3. Step 3: Cross multiply
    70,191.18x = 105,359.69 × 40,666.70
  4. Step 4: Simplify right side
    70,191.18x = 4,284,630,905.32
  5. Step 5: Solve for x
    x = 4,284,630,905.32/70,191.18
  6. Step 6: Final answer
    x = 61,042.30

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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.