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Finding the Fourth Proportional to 511,911.42, 767,979.18 and 156,953.13

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Solution

The fourth proportional to 511,911.42, 767,979.18 and 156,953.13 is: 235,464.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,911.42 : 767,979.18 = 156,953.13 : x
  2. Step 2: Convert to fraction form
    511,911.42/767,979.18 = 156,953.13/x
  3. Step 3: Cross multiply
    511,911.42x = 767,979.18 × 156,953.13
  4. Step 4: Simplify right side
    511,911.42x = 120,536,736,075.83
  5. Step 5: Solve for x
    x = 120,536,736,075.83/511,911.42
  6. Step 6: Final answer
    x = 235,464.05

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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.