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Finding the Fourth Proportional to 620,325.18, 856,373.94 and 417,442.86

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Solution

The fourth proportional to 620,325.18, 856,373.94 and 417,442.86 is: 576,289.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,325.18 : 856,373.94 = 417,442.86 : x
  2. Step 2: Convert to fraction form
    620,325.18/856,373.94 = 417,442.86/x
  3. Step 3: Cross multiply
    620,325.18x = 856,373.94 × 417,442.86
  4. Step 4: Simplify right side
    620,325.18x = 357,487,186,743.07
  5. Step 5: Solve for x
    x = 357,487,186,743.07/620,325.18
  6. Step 6: Final answer
    x = 576,289.98

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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.