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Finding the Fourth Proportional to 86,178.36, 118,893.41 and 53,457.59

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Solution

The fourth proportional to 86,178.36, 118,893.41 and 53,457.59 is: 73,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,178.36 : 118,893.41 = 53,457.59 : x
  2. Step 2: Convert to fraction form
    86,178.36/118,893.41 = 53,457.59/x
  3. Step 3: Cross multiply
    86,178.36x = 118,893.41 × 53,457.59
  4. Step 4: Simplify right side
    86,178.36x = 6,355,754,303.73
  5. Step 5: Solve for x
    x = 6,355,754,303.73/86,178.36
  6. Step 6: Final answer
    x = 73,751.16

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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.