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Finding the Fourth Proportional to 719,449.86, 992,858.86 and 409,335.35

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Solution

The fourth proportional to 719,449.86, 992,858.86 and 409,335.35 is: 564,893.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,449.86 : 992,858.86 = 409,335.35 : x
  2. Step 2: Convert to fraction form
    719,449.86/992,858.86 = 409,335.35/x
  3. Step 3: Cross multiply
    719,449.86x = 992,858.86 × 409,335.35
  4. Step 4: Simplify right side
    719,449.86x = 406,412,228,958.70
  5. Step 5: Solve for x
    x = 406,412,228,958.70/719,449.86
  6. Step 6: Final answer
    x = 564,893.05

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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.