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Finding the Fourth Proportional to 70,521.70, 105,818.94 and 46,845.64

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Solution

The fourth proportional to 70,521.70, 105,818.94 and 46,845.64 is: 70,292.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,521.70 : 105,818.94 = 46,845.64 : x
  2. Step 2: Convert to fraction form
    70,521.70/105,818.94 = 46,845.64/x
  3. Step 3: Cross multiply
    70,521.70x = 105,818.94 × 46,845.64
  4. Step 4: Simplify right side
    70,521.70x = 4,957,155,968.42
  5. Step 5: Solve for x
    x = 4,957,155,968.42/70,521.70
  6. Step 6: Final answer
    x = 70,292.63

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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.