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Finding the Fourth Proportional to 1,868,836.78, 2,803,905.72 and 589,641.76

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Solution

The fourth proportional to 1,868,836.78, 2,803,905.72 and 589,641.76 is: 884,667.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,836.78 : 2,803,905.72 = 589,641.76 : x
  2. Step 2: Convert to fraction form
    1,868,836.78/2,803,905.72 = 589,641.76/x
  3. Step 3: Cross multiply
    1,868,836.78x = 2,803,905.72 × 589,641.76
  4. Step 4: Simplify right side
    1,868,836.78x = 1,653,299,903,614.87
  5. Step 5: Solve for x
    x = 1,653,299,903,614.87/1,868,836.78
  6. Step 6: Final answer
    x = 884,667.90

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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.