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Finding the Fourth Proportional to 70,510.25, 105,855.54 and 60,578.54

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Solution

The fourth proportional to 70,510.25, 105,855.54 and 60,578.54 is: 90,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,510.25 : 105,855.54 = 60,578.54 : x
  2. Step 2: Convert to fraction form
    70,510.25/105,855.54 = 60,578.54/x
  3. Step 3: Cross multiply
    70,510.25x = 105,855.54 × 60,578.54
  4. Step 4: Simplify right side
    70,510.25x = 6,412,574,064.11
  5. Step 5: Solve for x
    x = 6,412,574,064.11/70,510.25
  6. Step 6: Final answer
    x = 90,945.27

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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.