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Finding the Fourth Proportional to 476,661.06, 715,089.96 and 139,712.76

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Solution

The fourth proportional to 476,661.06, 715,089.96 and 139,712.76 is: 209,597.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,661.06 : 715,089.96 = 139,712.76 : x
  2. Step 2: Convert to fraction form
    476,661.06/715,089.96 = 139,712.76/x
  3. Step 3: Cross multiply
    476,661.06x = 715,089.96 × 139,712.76
  4. Step 4: Simplify right side
    476,661.06x = 99,907,191,959.89
  5. Step 5: Solve for x
    x = 99,907,191,959.89/476,661.06
  6. Step 6: Final answer
    x = 209,597.97

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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.