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Finding the Fourth Proportional to 165,938,811.40, 248,429,920.20 and 165,938,811.40

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Solution

The fourth proportional to 165,938,811.40, 248,429,920.20 and 165,938,811.40 is: 248,429,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,938,811.40 : 248,429,920.20 = 165,938,811.40 : x
  2. Step 2: Convert to fraction form
    165,938,811.40/248,429,920.20 = 165,938,811.40/x
  3. Step 3: Cross multiply
    165,938,811.40x = 248,429,920.20 × 165,938,811.40
  4. Step 4: Simplify right side
    165,938,811.40x = 41,224,165,674,184,848
  5. Step 5: Solve for x
    x = 41,224,165,674,184,848/165,938,811.40
  6. Step 6: Final answer
    x = 248,429,920.20

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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.