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Finding the Fourth Proportional to 908,579.45, 1,359,916.72 and 908,579.45

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Solution

The fourth proportional to 908,579.45, 1,359,916.72 and 908,579.45 is: 1,359,916.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,579.45 : 1,359,916.72 = 908,579.45 : x
  2. Step 2: Convert to fraction form
    908,579.45/1,359,916.72 = 908,579.45/x
  3. Step 3: Cross multiply
    908,579.45x = 1,359,916.72 × 908,579.45
  4. Step 4: Simplify right side
    908,579.45x = 1,235,592,385,503.40
  5. Step 5: Solve for x
    x = 1,235,592,385,503.40/908,579.45
  6. Step 6: Final answer
    x = 1,359,916.72

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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.