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Finding the Fourth Proportional to 127,789,409.80, 191,684,114.70 and 127,789,409.80

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Solution

The fourth proportional to 127,789,409.80, 191,684,114.70 and 127,789,409.80 is: 191,684,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,789,409.80 : 191,684,114.70 = 127,789,409.80 : x
  2. Step 2: Convert to fraction form
    127,789,409.80/191,684,114.70 = 127,789,409.80/x
  3. Step 3: Cross multiply
    127,789,409.80x = 191,684,114.70 × 127,789,409.80
  4. Step 4: Simplify right side
    127,789,409.80x = 24,495,199,885,548,500
  5. Step 5: Solve for x
    x = 24,495,199,885,548,500/127,789,409.80
  6. Step 6: Final answer
    x = 191,684,114.70

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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.