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Finding the Fourth Proportional to 865,473.39, 1,194,399 and 521,417.64

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Solution

The fourth proportional to 865,473.39, 1,194,399 and 521,417.64 is: 719,583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,473.39 : 1,194,399 = 521,417.64 : x
  2. Step 2: Convert to fraction form
    865,473.39/1,194,399 = 521,417.64/x
  3. Step 3: Cross multiply
    865,473.39x = 1,194,399 × 521,417.64
  4. Step 4: Simplify right side
    865,473.39x = 622,780,707,798.36
  5. Step 5: Solve for x
    x = 622,780,707,798.36/865,473.39
  6. Step 6: Final answer
    x = 719,583.89

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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.