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Finding the Fourth Proportional to 472,243.40, 708,365.10 and 156,710.60

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Solution

The fourth proportional to 472,243.40, 708,365.10 and 156,710.60 is: 235,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,243.40 : 708,365.10 = 156,710.60 : x
  2. Step 2: Convert to fraction form
    472,243.40/708,365.10 = 156,710.60/x
  3. Step 3: Cross multiply
    472,243.40x = 708,365.10 × 156,710.60
  4. Step 4: Simplify right side
    472,243.40x = 111,008,319,840.06
  5. Step 5: Solve for x
    x = 111,008,319,840.06/472,243.40
  6. Step 6: Final answer
    x = 235,065.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.