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Finding the Fourth Proportional to 98,518.64, 135,958.98 and 53,806.64

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Solution

The fourth proportional to 98,518.64, 135,958.98 and 53,806.64 is: 74,254.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,518.64 : 135,958.98 = 53,806.64 : x
  2. Step 2: Convert to fraction form
    98,518.64/135,958.98 = 53,806.64/x
  3. Step 3: Cross multiply
    98,518.64x = 135,958.98 × 53,806.64
  4. Step 4: Simplify right side
    98,518.64x = 7,315,495,891.63
  5. Step 5: Solve for x
    x = 7,315,495,891.63/98,518.64
  6. Step 6: Final answer
    x = 74,254.94

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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.