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Finding the Fourth Proportional to 476,717.72, 715,075.96 and 121,731.56

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Solution

The fourth proportional to 476,717.72, 715,075.96 and 121,731.56 is: 182,597.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,717.72 : 715,075.96 = 121,731.56 : x
  2. Step 2: Convert to fraction form
    476,717.72/715,075.96 = 121,731.56/x
  3. Step 3: Cross multiply
    476,717.72x = 715,075.96 × 121,731.56
  4. Step 4: Simplify right side
    476,717.72x = 87,047,312,129.30
  5. Step 5: Solve for x
    x = 87,047,312,129.30/476,717.72
  6. Step 6: Final answer
    x = 182,597.18

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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.