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Finding the Fourth Proportional to 19,598.40, 29,397.60 and 7,905.60

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Solution

The fourth proportional to 19,598.40, 29,397.60 and 7,905.60 is: 11,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,598.40 : 29,397.60 = 7,905.60 : x
  2. Step 2: Convert to fraction form
    19,598.40/29,397.60 = 7,905.60/x
  3. Step 3: Cross multiply
    19,598.40x = 29,397.60 × 7,905.60
  4. Step 4: Simplify right side
    19,598.40x = 232,405,666.56
  5. Step 5: Solve for x
    x = 232,405,666.56/19,598.40
  6. Step 6: Final answer
    x = 11,858.40

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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.