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Finding the Fourth Proportional to 714,341.93, 985,803.87 and 392,082

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Solution

The fourth proportional to 714,341.93, 985,803.87 and 392,082 is: 541,079.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,341.93 : 985,803.87 = 392,082 : x
  2. Step 2: Convert to fraction form
    714,341.93/985,803.87 = 392,082/x
  3. Step 3: Cross multiply
    714,341.93x = 985,803.87 × 392,082
  4. Step 4: Simplify right side
    714,341.93x = 386,515,952,957.34
  5. Step 5: Solve for x
    x = 386,515,952,957.34/714,341.93
  6. Step 6: Final answer
    x = 541,079.75

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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.