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Finding the Fourth Proportional to 615,106.80, 922,660.20 and 194,511.60

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Solution

The fourth proportional to 615,106.80, 922,660.20 and 194,511.60 is: 291,767.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,106.80 : 922,660.20 = 194,511.60 : x
  2. Step 2: Convert to fraction form
    615,106.80/922,660.20 = 194,511.60/x
  3. Step 3: Cross multiply
    615,106.80x = 922,660.20 × 194,511.60
  4. Step 4: Simplify right side
    615,106.80x = 179,468,111,758.32
  5. Step 5: Solve for x
    x = 179,468,111,758.32/615,106.80
  6. Step 6: Final answer
    x = 291,767.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.