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Finding the Fourth Proportional to 11,856.60, 16,362 and 6,551.55

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Solution

The fourth proportional to 11,856.60, 16,362 and 6,551.55 is: 9,041.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.60 : 16,362 = 6,551.55 : x
  2. Step 2: Convert to fraction form
    11,856.60/16,362 = 6,551.55/x
  3. Step 3: Cross multiply
    11,856.60x = 16,362 × 6,551.55
  4. Step 4: Simplify right side
    11,856.60x = 107,196,461.10
  5. Step 5: Solve for x
    x = 107,196,461.10/11,856.60
  6. Step 6: Final answer
    x = 9,041.08

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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.