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Finding the Fourth Proportional to 6,556.40, 9,810.60 and 4,828.40

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Solution

The fourth proportional to 6,556.40, 9,810.60 and 4,828.40 is: 7,224.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,556.40 : 9,810.60 = 4,828.40 : x
  2. Step 2: Convert to fraction form
    6,556.40/9,810.60 = 4,828.40/x
  3. Step 3: Cross multiply
    6,556.40x = 9,810.60 × 4,828.40
  4. Step 4: Simplify right side
    6,556.40x = 47,369,501.04
  5. Step 5: Solve for x
    x = 47,369,501.04/6,556.40
  6. Step 6: Final answer
    x = 7,224.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.