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Finding the Fourth Proportional to 51,062.90, 70,466.18 and 28,706.90

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Solution

The fourth proportional to 51,062.90, 70,466.18 and 28,706.90 is: 39,615.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,062.90 : 70,466.18 = 28,706.90 : x
  2. Step 2: Convert to fraction form
    51,062.90/70,466.18 = 28,706.90/x
  3. Step 3: Cross multiply
    51,062.90x = 70,466.18 × 28,706.90
  4. Step 4: Simplify right side
    51,062.90x = 2,022,865,582.64
  5. Step 5: Solve for x
    x = 2,022,865,582.64/51,062.90
  6. Step 6: Final answer
    x = 39,615.17

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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.