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Finding the Fourth Proportional to 760,713.79, 1,049,817.84 and 421,182.04

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Solution

The fourth proportional to 760,713.79, 1,049,817.84 and 421,182.04 is: 581,249.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,713.79 : 1,049,817.84 = 421,182.04 : x
  2. Step 2: Convert to fraction form
    760,713.79/1,049,817.84 = 421,182.04/x
  3. Step 3: Cross multiply
    760,713.79x = 1,049,817.84 × 421,182.04
  4. Step 4: Simplify right side
    760,713.79x = 442,164,419,479.59
  5. Step 5: Solve for x
    x = 442,164,419,479.59/760,713.79
  6. Step 6: Final answer
    x = 581,249.38

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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.