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Finding the Fourth Proportional to 573,188.79, 789,633.42 and 400,784.17

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Solution

The fourth proportional to 573,188.79, 789,633.42 and 400,784.17 is: 552,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,188.79 : 789,633.42 = 400,784.17 : x
  2. Step 2: Convert to fraction form
    573,188.79/789,633.42 = 400,784.17/x
  3. Step 3: Cross multiply
    573,188.79x = 789,633.42 × 400,784.17
  4. Step 4: Simplify right side
    573,188.79x = 316,472,574,838.96
  5. Step 5: Solve for x
    x = 316,472,574,838.96/573,188.79
  6. Step 6: Final answer
    x = 552,126.25

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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.