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Finding the Fourth Proportional to 676,311.12, 933,338.40 and 374,505.12

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Solution

The fourth proportional to 676,311.12, 933,338.40 and 374,505.12 is: 516,833.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,311.12 : 933,338.40 = 374,505.12 : x
  2. Step 2: Convert to fraction form
    676,311.12/933,338.40 = 374,505.12/x
  3. Step 3: Cross multiply
    676,311.12x = 933,338.40 × 374,505.12
  4. Step 4: Simplify right side
    676,311.12x = 349,540,009,492.61
  5. Step 5: Solve for x
    x = 349,540,009,492.61/676,311.12
  6. Step 6: Final answer
    x = 516,833.15

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.