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Finding the Fourth Proportional to 12,456,492.90, 18,684,739.35 and 12,456,492.90

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Solution

The fourth proportional to 12,456,492.90, 18,684,739.35 and 12,456,492.90 is: 18,684,739.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,492.90 : 18,684,739.35 = 12,456,492.90 : x
  2. Step 2: Convert to fraction form
    12,456,492.90/18,684,739.35 = 12,456,492.90/x
  3. Step 3: Cross multiply
    12,456,492.90x = 18,684,739.35 × 12,456,492.90
  4. Step 4: Simplify right side
    12,456,492.90x = 232,746,323,051,625.62
  5. Step 5: Solve for x
    x = 232,746,323,051,625.62/12,456,492.90
  6. Step 6: Final answer
    x = 18,684,739.35

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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.