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Finding the Fourth Proportional to 346,070.10, 519,105.15 and 257,496.60

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Solution

The fourth proportional to 346,070.10, 519,105.15 and 257,496.60 is: 386,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,070.10 : 519,105.15 = 257,496.60 : x
  2. Step 2: Convert to fraction form
    346,070.10/519,105.15 = 257,496.60/x
  3. Step 3: Cross multiply
    346,070.10x = 519,105.15 × 257,496.60
  4. Step 4: Simplify right side
    346,070.10x = 133,667,811,167.49
  5. Step 5: Solve for x
    x = 133,667,811,167.49/346,070.10
  6. Step 6: Final answer
    x = 386,244.90

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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.