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Finding the Fourth Proportional to 615,212.89, 922,813.80 and 194,488.90

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Solution

The fourth proportional to 615,212.89, 922,813.80 and 194,488.90 is: 291,731.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,212.89 : 922,813.80 = 194,488.90 : x
  2. Step 2: Convert to fraction form
    615,212.89/922,813.80 = 194,488.90/x
  3. Step 3: Cross multiply
    615,212.89x = 922,813.80 × 194,488.90
  4. Step 4: Simplify right side
    615,212.89x = 179,477,040,866.82
  5. Step 5: Solve for x
    x = 179,477,040,866.82/615,212.89
  6. Step 6: Final answer
    x = 291,731.60

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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.