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Finding the Fourth Proportional to 651,206.01, 898,696.33 and 393,078.86

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Solution

The fourth proportional to 651,206.01, 898,696.33 and 393,078.86 is: 542,468.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,206.01 : 898,696.33 = 393,078.86 : x
  2. Step 2: Convert to fraction form
    651,206.01/898,696.33 = 393,078.86/x
  3. Step 3: Cross multiply
    651,206.01x = 898,696.33 × 393,078.86
  4. Step 4: Simplify right side
    651,206.01x = 353,258,524,389.10
  5. Step 5: Solve for x
    x = 353,258,524,389.10/651,206.01
  6. Step 6: Final answer
    x = 542,468.16

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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.