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Finding the Fourth Proportional to 109,671.47, 151,346.68 and 59,370.47

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Solution

The fourth proportional to 109,671.47, 151,346.68 and 59,370.47 is: 81,931.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,671.47 : 151,346.68 = 59,370.47 : x
  2. Step 2: Convert to fraction form
    109,671.47/151,346.68 = 59,370.47/x
  3. Step 3: Cross multiply
    109,671.47x = 151,346.68 × 59,370.47
  4. Step 4: Simplify right side
    109,671.47x = 8,985,523,186.93
  5. Step 5: Solve for x
    x = 8,985,523,186.93/109,671.47
  6. Step 6: Final answer
    x = 81,931.27

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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.