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Finding the Fourth Proportional to 644,803.40, 967,205.10 and 201,571.40

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Solution

The fourth proportional to 644,803.40, 967,205.10 and 201,571.40 is: 302,357.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,803.40 : 967,205.10 = 201,571.40 : x
  2. Step 2: Convert to fraction form
    644,803.40/967,205.10 = 201,571.40/x
  3. Step 3: Cross multiply
    644,803.40x = 967,205.10 × 201,571.40
  4. Step 4: Simplify right side
    644,803.40x = 194,960,886,094.14
  5. Step 5: Solve for x
    x = 194,960,886,094.14/644,803.40
  6. Step 6: Final answer
    x = 302,357.10

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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.