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Finding the Fourth Proportional to 346,412.40, 519,618.60 and 159,788.40

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Solution

The fourth proportional to 346,412.40, 519,618.60 and 159,788.40 is: 239,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,412.40 : 519,618.60 = 159,788.40 : x
  2. Step 2: Convert to fraction form
    346,412.40/519,618.60 = 159,788.40/x
  3. Step 3: Cross multiply
    346,412.40x = 519,618.60 × 159,788.40
  4. Step 4: Simplify right side
    346,412.40x = 83,029,024,704.24
  5. Step 5: Solve for x
    x = 83,029,024,704.24/346,412.40
  6. Step 6: Final answer
    x = 239,682.60

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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.