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Finding the Fourth Proportional to 153,298.34, 211,551.54 and 86,230.34

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Solution

The fourth proportional to 153,298.34, 211,551.54 and 86,230.34 is: 118,997.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,298.34 : 211,551.54 = 86,230.34 : x
  2. Step 2: Convert to fraction form
    153,298.34/211,551.54 = 86,230.34/x
  3. Step 3: Cross multiply
    153,298.34x = 211,551.54 × 86,230.34
  4. Step 4: Simplify right side
    153,298.34x = 18,242,161,221.72
  5. Step 5: Solve for x
    x = 18,242,161,221.72/153,298.34
  6. Step 6: Final answer
    x = 118,997.77

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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.