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Finding the Fourth Proportional to 346,059.60, 519,089.40 and 257,486.10

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Solution

The fourth proportional to 346,059.60, 519,089.40 and 257,486.10 is: 386,229.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,059.60 : 519,089.40 = 257,486.10 : x
  2. Step 2: Convert to fraction form
    346,059.60/519,089.40 = 257,486.10/x
  3. Step 3: Cross multiply
    346,059.60x = 519,089.40 × 257,486.10
  4. Step 4: Simplify right side
    346,059.60x = 133,658,305,157.34
  5. Step 5: Solve for x
    x = 133,658,305,157.34/346,059.60
  6. Step 6: Final answer
    x = 386,229.15

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Similar ratio
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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.