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Finding the Fourth Proportional to 70,230.76, 96,918.54 and 40,014.76

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Solution

The fourth proportional to 70,230.76, 96,918.54 and 40,014.76 is: 55,220.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,230.76 : 96,918.54 = 40,014.76 : x
  2. Step 2: Convert to fraction form
    70,230.76/96,918.54 = 40,014.76/x
  3. Step 3: Cross multiply
    70,230.76x = 96,918.54 × 40,014.76
  4. Step 4: Simplify right side
    70,230.76x = 3,878,172,117.65
  5. Step 5: Solve for x
    x = 3,878,172,117.65/70,230.76
  6. Step 6: Final answer
    x = 55,220.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.