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Finding the Fourth Proportional to 70,949.72, 105,798.65 and 67,461.40

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Solution

The fourth proportional to 70,949.72, 105,798.65 and 67,461.40 is: 100,596.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,949.72 : 105,798.65 = 67,461.40 : x
  2. Step 2: Convert to fraction form
    70,949.72/105,798.65 = 67,461.40/x
  3. Step 3: Cross multiply
    70,949.72x = 105,798.65 × 67,461.40
  4. Step 4: Simplify right side
    70,949.72x = 7,137,325,047.11
  5. Step 5: Solve for x
    x = 7,137,325,047.11/70,949.72
  6. Step 6: Final answer
    x = 100,596.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.