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Finding the Fourth Proportional to 10,820.79, 14,928.79 and 6,573.60

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Solution

The fourth proportional to 10,820.79, 14,928.79 and 6,573.60 is: 9,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,820.79 : 14,928.79 = 6,573.60 : x
  2. Step 2: Convert to fraction form
    10,820.79/14,928.79 = 6,573.60/x
  3. Step 3: Cross multiply
    10,820.79x = 14,928.79 × 6,573.60
  4. Step 4: Simplify right side
    10,820.79x = 98,135,877.51
  5. Step 5: Solve for x
    x = 98,135,877.51/10,820.79
  6. Step 6: Final answer
    x = 9,069.20

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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.