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Finding the Fourth Proportional to 348,066.80, 522,148.80 and 148,385.60

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Solution

The fourth proportional to 348,066.80, 522,148.80 and 148,385.60 is: 222,599.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,066.80 : 522,148.80 = 148,385.60 : x
  2. Step 2: Convert to fraction form
    348,066.80/522,148.80 = 148,385.60/x
  3. Step 3: Cross multiply
    348,066.80x = 522,148.80 × 148,385.60
  4. Step 4: Simplify right side
    348,066.80x = 77,479,362,977.28
  5. Step 5: Solve for x
    x = 77,479,362,977.28/348,066.80
  6. Step 6: Final answer
    x = 222,599.12

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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.