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Finding the Fourth Proportional to 66,886.68, 100,346.73 and 47,203.68

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Solution

The fourth proportional to 66,886.68, 100,346.73 and 47,203.68 is: 70,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,886.68 : 100,346.73 = 47,203.68 : x
  2. Step 2: Convert to fraction form
    66,886.68/100,346.73 = 47,203.68/x
  3. Step 3: Cross multiply
    66,886.68x = 100,346.73 × 47,203.68
  4. Step 4: Simplify right side
    66,886.68x = 4,736,734,931.97
  5. Step 5: Solve for x
    x = 4,736,734,931.97/66,886.68
  6. Step 6: Final answer
    x = 70,817.31

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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.