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Finding the Fourth Proportional to 86,012.48, 118,693.18 and 47,774.51

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Solution

The fourth proportional to 86,012.48, 118,693.18 and 47,774.51 is: 65,926.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,012.48 : 118,693.18 = 47,774.51 : x
  2. Step 2: Convert to fraction form
    86,012.48/118,693.18 = 47,774.51/x
  3. Step 3: Cross multiply
    86,012.48x = 118,693.18 × 47,774.51
  4. Step 4: Simplify right side
    86,012.48x = 5,670,507,921.38
  5. Step 5: Solve for x
    x = 5,670,507,921.38/86,012.48
  6. Step 6: Final answer
    x = 65,926.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.