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Finding the Fourth Proportional to 714,274.68, 985,706.52 and 392,005.56

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Solution

The fourth proportional to 714,274.68, 985,706.52 and 392,005.56 is: 540,971.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,274.68 : 985,706.52 = 392,005.56 : x
  2. Step 2: Convert to fraction form
    714,274.68/985,706.52 = 392,005.56/x
  3. Step 3: Cross multiply
    714,274.68x = 985,706.52 × 392,005.56
  4. Step 4: Simplify right side
    714,274.68x = 386,402,436,368.25
  5. Step 5: Solve for x
    x = 386,402,436,368.25/714,274.68
  6. Step 6: Final answer
    x = 540,971.77

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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.