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Finding the Fourth Proportional to 136,597.41, 188,503.62 and 76,168.77

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Solution

The fourth proportional to 136,597.41, 188,503.62 and 76,168.77 is: 105,112.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,597.41 : 188,503.62 = 76,168.77 : x
  2. Step 2: Convert to fraction form
    136,597.41/188,503.62 = 76,168.77/x
  3. Step 3: Cross multiply
    136,597.41x = 188,503.62 × 76,168.77
  4. Step 4: Simplify right side
    136,597.41x = 14,358,088,875.95
  5. Step 5: Solve for x
    x = 14,358,088,875.95/136,597.41
  6. Step 6: Final answer
    x = 105,112.45

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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.