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Finding the Fourth Proportional to 153,996.75, 212,501.64 and 86,004.27

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Solution

The fourth proportional to 153,996.75, 212,501.64 and 86,004.27 is: 118,678.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,996.75 : 212,501.64 = 86,004.27 : x
  2. Step 2: Convert to fraction form
    153,996.75/212,501.64 = 86,004.27/x
  3. Step 3: Cross multiply
    153,996.75x = 212,501.64 × 86,004.27
  4. Step 4: Simplify right side
    153,996.75x = 18,276,048,422.00
  5. Step 5: Solve for x
    x = 18,276,048,422.00/153,996.75
  6. Step 6: Final answer
    x = 118,678.14

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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.