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Finding the Fourth Proportional to 127,639,802.70, 191,459,704.05 and 127,639,802.70

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Solution

The fourth proportional to 127,639,802.70, 191,459,704.05 and 127,639,802.70 is: 191,459,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,639,802.70 : 191,459,704.05 = 127,639,802.70 : x
  2. Step 2: Convert to fraction form
    127,639,802.70/191,459,704.05 = 127,639,802.70/x
  3. Step 3: Cross multiply
    127,639,802.70x = 191,459,704.05 × 127,639,802.70
  4. Step 4: Simplify right side
    127,639,802.70x = 24,437,878,849,942,392
  5. Step 5: Solve for x
    x = 24,437,878,849,942,392/127,639,802.70
  6. Step 6: Final answer
    x = 191,459,704.05

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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.