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Finding the Fourth Proportional to 714,674.04, 986,252.15 and 392,405.01

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Solution

The fourth proportional to 714,674.04, 986,252.15 and 392,405.01 is: 541,520.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,674.04 : 986,252.15 = 392,405.01 : x
  2. Step 2: Convert to fraction form
    714,674.04/986,252.15 = 392,405.01/x
  3. Step 3: Cross multiply
    714,674.04x = 986,252.15 × 392,405.01
  4. Step 4: Simplify right side
    714,674.04x = 387,010,282,065.84
  5. Step 5: Solve for x
    x = 387,010,282,065.84/714,674.04
  6. Step 6: Final answer
    x = 541,520.00

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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.