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Finding the Fourth Proportional to 9,953.76, 13,736.48 and 5,477.64

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Solution

The fourth proportional to 9,953.76, 13,736.48 and 5,477.64 is: 7,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,953.76 : 13,736.48 = 5,477.64 : x
  2. Step 2: Convert to fraction form
    9,953.76/13,736.48 = 5,477.64/x
  3. Step 3: Cross multiply
    9,953.76x = 13,736.48 × 5,477.64
  4. Step 4: Simplify right side
    9,953.76x = 75,243,492.31
  5. Step 5: Solve for x
    x = 75,243,492.31/9,953.76
  6. Step 6: Final answer
    x = 7,559.30

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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.