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Finding the Fourth Proportional to 289,270.30, 433,905.45 and 123,036.70

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Solution

The fourth proportional to 289,270.30, 433,905.45 and 123,036.70 is: 184,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,270.30 : 433,905.45 = 123,036.70 : x
  2. Step 2: Convert to fraction form
    289,270.30/433,905.45 = 123,036.70/x
  3. Step 3: Cross multiply
    289,270.30x = 433,905.45 × 123,036.70
  4. Step 4: Simplify right side
    289,270.30x = 53,386,294,680.02
  5. Step 5: Solve for x
    x = 53,386,294,680.02/289,270.30
  6. Step 6: Final answer
    x = 184,555.05

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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.