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Finding the Fourth Proportional to 15,603,929.70, 23,405,894.55 and 8,045,657.70

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Solution

The fourth proportional to 15,603,929.70, 23,405,894.55 and 8,045,657.70 is: 12,068,486.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603,929.70 : 23,405,894.55 = 8,045,657.70 : x
  2. Step 2: Convert to fraction form
    15,603,929.70/23,405,894.55 = 8,045,657.70/x
  3. Step 3: Cross multiply
    15,603,929.70x = 23,405,894.55 × 8,045,657.70
  4. Step 4: Simplify right side
    15,603,929.70x = 188,315,815,711,595.53
  5. Step 5: Solve for x
    x = 188,315,815,711,595.53/15,603,929.70
  6. Step 6: Final answer
    x = 12,068,486.55

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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.