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Finding the Fourth Proportional to 13,461.21, 18,575.93 and 7,492.71

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Solution

The fourth proportional to 13,461.21, 18,575.93 and 7,492.71 is: 10,339.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.21 : 18,575.93 = 7,492.71 : x
  2. Step 2: Convert to fraction form
    13,461.21/18,575.93 = 7,492.71/x
  3. Step 3: Cross multiply
    13,461.21x = 18,575.93 × 7,492.71
  4. Step 4: Simplify right side
    13,461.21x = 139,184,019.01
  5. Step 5: Solve for x
    x = 139,184,019.01/13,461.21
  6. Step 6: Final answer
    x = 10,339.64

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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.