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Finding the Fourth Proportional to 186,689,973.60, 280,034,960.40 and 50,375,138.40

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Solution

The fourth proportional to 186,689,973.60, 280,034,960.40 and 50,375,138.40 is: 75,562,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,689,973.60 : 280,034,960.40 = 50,375,138.40 : x
  2. Step 2: Convert to fraction form
    186,689,973.60/280,034,960.40 = 50,375,138.40/x
  3. Step 3: Cross multiply
    186,689,973.60x = 280,034,960.40 × 50,375,138.40
  4. Step 4: Simplify right side
    186,689,973.60x = 14,106,799,886,988,518
  5. Step 5: Solve for x
    x = 14,106,799,886,988,518/186,689,973.60
  6. Step 6: Final answer
    x = 75,562,707.60

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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.