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Finding the Fourth Proportional to 378,675.15, 568,130.58 and 112,437.06

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Solution

The fourth proportional to 378,675.15, 568,130.58 and 112,437.06 is: 168,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,675.15 : 568,130.58 = 112,437.06 : x
  2. Step 2: Convert to fraction form
    378,675.15/568,130.58 = 112,437.06/x
  3. Step 3: Cross multiply
    378,675.15x = 568,130.58 × 112,437.06
  4. Step 4: Simplify right side
    378,675.15x = 63,878,932,111.29
  5. Step 5: Solve for x
    x = 63,878,932,111.29/378,675.15
  6. Step 6: Final answer
    x = 168,690.58

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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.