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Finding the Fourth Proportional to 153,263.08, 211,501 and 86,195.08

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Solution

The fourth proportional to 153,263.08, 211,501 and 86,195.08 is: 118,948.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,263.08 : 211,501 = 86,195.08 : x
  2. Step 2: Convert to fraction form
    153,263.08/211,501 = 86,195.08/x
  3. Step 3: Cross multiply
    153,263.08x = 211,501 × 86,195.08
  4. Step 4: Simplify right side
    153,263.08x = 18,230,345,615.08
  5. Step 5: Solve for x
    x = 18,230,345,615.08/153,263.08
  6. Step 6: Final answer
    x = 118,948.06

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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.