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Finding the Fourth Proportional to 385,928.82, 578,193.39 and 377,530.74

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Solution

The fourth proportional to 385,928.82, 578,193.39 and 377,530.74 is: 565,611.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,928.82 : 578,193.39 = 377,530.74 : x
  2. Step 2: Convert to fraction form
    385,928.82/578,193.39 = 377,530.74/x
  3. Step 3: Cross multiply
    385,928.82x = 578,193.39 × 377,530.74
  4. Step 4: Simplify right side
    385,928.82x = 218,285,778,389.81
  5. Step 5: Solve for x
    x = 218,285,778,389.81/385,928.82
  6. Step 6: Final answer
    x = 565,611.50

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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.