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Finding the Fourth Proportional to 406,314.28, 609,557.28 and 121,994.56

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Solution

The fourth proportional to 406,314.28, 609,557.28 and 121,994.56 is: 183,017.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,314.28 : 609,557.28 = 121,994.56 : x
  2. Step 2: Convert to fraction form
    406,314.28/609,557.28 = 121,994.56/x
  3. Step 3: Cross multiply
    406,314.28x = 609,557.28 × 121,994.56
  4. Step 4: Simplify right side
    406,314.28x = 74,362,672,168.40
  5. Step 5: Solve for x
    x = 74,362,672,168.40/406,314.28
  6. Step 6: Final answer
    x = 183,017.62

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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.