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Finding the Fourth Proportional to 191,698,751.60, 287,728,530.60 and 100,887,513.20

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Solution

The fourth proportional to 191,698,751.60, 287,728,530.60 and 100,887,513.20 is: 151,426,212.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,698,751.60 : 287,728,530.60 = 100,887,513.20 : x
  2. Step 2: Convert to fraction form
    191,698,751.60/287,728,530.60 = 100,887,513.20/x
  3. Step 3: Cross multiply
    191,698,751.60x = 287,728,530.60 × 100,887,513.20
  4. Step 4: Simplify right side
    191,698,751.60x = 29,028,215,928,924,108
  5. Step 5: Solve for x
    x = 29,028,215,928,924,108/191,698,751.60
  6. Step 6: Final answer
    x = 151,426,212.67

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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.