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Finding the Fourth Proportional to 438,430.59, 605,051.10 and 247,439.88

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Solution

The fourth proportional to 438,430.59, 605,051.10 and 247,439.88 is: 341,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,430.59 : 605,051.10 = 247,439.88 : x
  2. Step 2: Convert to fraction form
    438,430.59/605,051.10 = 247,439.88/x
  3. Step 3: Cross multiply
    438,430.59x = 605,051.10 × 247,439.88
  4. Step 4: Simplify right side
    438,430.59x = 149,713,771,577.87
  5. Step 5: Solve for x
    x = 149,713,771,577.87/438,430.59
  6. Step 6: Final answer
    x = 341,476.56

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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.