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Finding the Fourth Proportional to 65,626.56, 90,533.14 and 42,955.56

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Solution

The fourth proportional to 65,626.56, 90,533.14 and 42,955.56 is: 59,258.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,626.56 : 90,533.14 = 42,955.56 : x
  2. Step 2: Convert to fraction form
    65,626.56/90,533.14 = 42,955.56/x
  3. Step 3: Cross multiply
    65,626.56x = 90,533.14 × 42,955.56
  4. Step 4: Simplify right side
    65,626.56x = 3,888,901,619.87
  5. Step 5: Solve for x
    x = 3,888,901,619.87/65,626.56
  6. Step 6: Final answer
    x = 59,258.04

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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.