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Finding the Fourth Proportional to 100,262.95, 138,349.70 and 59,962.01

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Solution

The fourth proportional to 100,262.95, 138,349.70 and 59,962.01 is: 82,739.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,262.95 : 138,349.70 = 59,962.01 : x
  2. Step 2: Convert to fraction form
    100,262.95/138,349.70 = 59,962.01/x
  3. Step 3: Cross multiply
    100,262.95x = 138,349.70 × 59,962.01
  4. Step 4: Simplify right side
    100,262.95x = 8,295,725,328.20
  5. Step 5: Solve for x
    x = 8,295,725,328.20/100,262.95
  6. Step 6: Final answer
    x = 82,739.69

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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.