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Finding the Fourth Proportional to 8,208,045.45, 12,312,068.18 and 8,208,045.45

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Solution

The fourth proportional to 8,208,045.45, 12,312,068.18 and 8,208,045.45 is: 12,312,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,208,045.45 : 12,312,068.18 = 8,208,045.45 : x
  2. Step 2: Convert to fraction form
    8,208,045.45/12,312,068.18 = 8,208,045.45/x
  3. Step 3: Cross multiply
    8,208,045.45x = 12,312,068.18 × 8,208,045.45
  4. Step 4: Simplify right side
    8,208,045.45x = 101,058,015,163,898.56
  5. Step 5: Solve for x
    x = 101,058,015,163,898.56/8,208,045.45
  6. Step 6: Final answer
    x = 12,312,068.18

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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.