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Finding the Fourth Proportional to 307,686.72, 461,526.36 and 79,962.16

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Solution

The fourth proportional to 307,686.72, 461,526.36 and 79,962.16 is: 119,942.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,686.72 : 461,526.36 = 79,962.16 : x
  2. Step 2: Convert to fraction form
    307,686.72/461,526.36 = 79,962.16/x
  3. Step 3: Cross multiply
    307,686.72x = 461,526.36 × 79,962.16
  4. Step 4: Simplify right side
    307,686.72x = 36,904,644,642.54
  5. Step 5: Solve for x
    x = 36,904,644,642.54/307,686.72
  6. Step 6: Final answer
    x = 119,942.28

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1.5x scale

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.