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Finding the Fourth Proportional to 433,533.61, 649,459.09 and 319,474.45

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Solution

The fourth proportional to 433,533.61, 649,459.09 and 319,474.45 is: 478,591.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,533.61 : 649,459.09 = 319,474.45 : x
  2. Step 2: Convert to fraction form
    433,533.61/649,459.09 = 319,474.45/x
  3. Step 3: Cross multiply
    433,533.61x = 649,459.09 × 319,474.45
  4. Step 4: Simplify right side
    433,533.61x = 207,485,585,575.25
  5. Step 5: Solve for x
    x = 207,485,585,575.25/433,533.61
  6. Step 6: Final answer
    x = 478,591.70

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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.