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Finding the Fourth Proportional to 56,006.40, 83,912.40 and 47,258.40

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Solution

The fourth proportional to 56,006.40, 83,912.40 and 47,258.40 is: 70,805.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,006.40 : 83,912.40 = 47,258.40 : x
  2. Step 2: Convert to fraction form
    56,006.40/83,912.40 = 47,258.40/x
  3. Step 3: Cross multiply
    56,006.40x = 83,912.40 × 47,258.40
  4. Step 4: Simplify right side
    56,006.40x = 3,965,565,764.16
  5. Step 5: Solve for x
    x = 3,965,565,764.16/56,006.40
  6. Step 6: Final answer
    x = 70,805.58

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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.