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Finding the Fourth Proportional to 165,688.80, 248,533.20 and 53,368.80

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Solution

The fourth proportional to 165,688.80, 248,533.20 and 53,368.80 is: 80,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,688.80 : 248,533.20 = 53,368.80 : x
  2. Step 2: Convert to fraction form
    165,688.80/248,533.20 = 53,368.80/x
  3. Step 3: Cross multiply
    165,688.80x = 248,533.20 × 53,368.80
  4. Step 4: Simplify right side
    165,688.80x = 13,263,918,644.16
  5. Step 5: Solve for x
    x = 13,263,918,644.16/165,688.80
  6. Step 6: Final answer
    x = 80,053.20

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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.