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Finding the Fourth Proportional to 4,920,751.15, 7,367,840.70 and 4,920,751.15

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Solution

The fourth proportional to 4,920,751.15, 7,367,840.70 and 4,920,751.15 is: 7,367,840.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920,751.15 : 7,367,840.70 = 4,920,751.15 : x
  2. Step 2: Convert to fraction form
    4,920,751.15/7,367,840.70 = 4,920,751.15/x
  3. Step 3: Cross multiply
    4,920,751.15x = 7,367,840.70 × 4,920,751.15
  4. Step 4: Simplify right side
    4,920,751.15x = 36,255,310,597,541.81
  5. Step 5: Solve for x
    x = 36,255,310,597,541.81/4,920,751.15
  6. Step 6: Final answer
    x = 7,367,840.70

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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.