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Finding the Fourth Proportional to 348,532.80, 522,788.40 and 99,214.80

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Solution

The fourth proportional to 348,532.80, 522,788.40 and 99,214.80 is: 148,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,532.80 : 522,788.40 = 99,214.80 : x
  2. Step 2: Convert to fraction form
    348,532.80/522,788.40 = 99,214.80/x
  3. Step 3: Cross multiply
    348,532.80x = 522,788.40 × 99,214.80
  4. Step 4: Simplify right side
    348,532.80x = 51,868,346,548.32
  5. Step 5: Solve for x
    x = 51,868,346,548.32/348,532.80
  6. Step 6: Final answer
    x = 148,819.13

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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.