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Finding the Fourth Proportional to 118,747,457.60, 178,121,186.40 and 118,747,457.60

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Solution

The fourth proportional to 118,747,457.60, 178,121,186.40 and 118,747,457.60 is: 178,121,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,747,457.60 : 178,121,186.40 = 118,747,457.60 : x
  2. Step 2: Convert to fraction form
    118,747,457.60/178,121,186.40 = 118,747,457.60/x
  3. Step 3: Cross multiply
    118,747,457.60x = 178,121,186.40 × 118,747,457.60
  4. Step 4: Simplify right side
    118,747,457.60x = 21,151,438,029,695,696
  5. Step 5: Solve for x
    x = 21,151,438,029,695,696/118,747,457.60
  6. Step 6: Final answer
    x = 178,121,186.40

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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.