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Finding the Fourth Proportional to 18,581,409.60, 27,872,114.40 and 12,124,401.45

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Solution

The fourth proportional to 18,581,409.60, 27,872,114.40 and 12,124,401.45 is: 18,186,602.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581,409.60 : 27,872,114.40 = 12,124,401.45 : x
  2. Step 2: Convert to fraction form
    18,581,409.60/27,872,114.40 = 12,124,401.45/x
  3. Step 3: Cross multiply
    18,581,409.60x = 27,872,114.40 × 12,124,401.45
  4. Step 4: Simplify right side
    18,581,409.60x = 337,932,704,245,925.81
  5. Step 5: Solve for x
    x = 337,932,704,245,925.81/18,581,409.60
  6. Step 6: Final answer
    x = 18,186,602.18

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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.