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Finding the Fourth Proportional to 346,074.60, 519,111.90 and 257,501.10

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Solution

The fourth proportional to 346,074.60, 519,111.90 and 257,501.10 is: 386,251.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,074.60 : 519,111.90 = 257,501.10 : x
  2. Step 2: Convert to fraction form
    346,074.60/519,111.90 = 257,501.10/x
  3. Step 3: Cross multiply
    346,074.60x = 519,111.90 × 257,501.10
  4. Step 4: Simplify right side
    346,074.60x = 133,671,885,273.09
  5. Step 5: Solve for x
    x = 133,671,885,273.09/346,074.60
  6. Step 6: Final answer
    x = 386,251.65

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Double scale
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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.