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Finding the Fourth Proportional to 108,909,784.80, 152,587,072.80 and 108,909,784.80

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Solution

The fourth proportional to 108,909,784.80, 152,587,072.80 and 108,909,784.80 is: 152,587,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,909,784.80 : 152,587,072.80 = 108,909,784.80 : x
  2. Step 2: Convert to fraction form
    108,909,784.80/152,587,072.80 = 108,909,784.80/x
  3. Step 3: Cross multiply
    108,909,784.80x = 152,587,072.80 × 108,909,784.80
  4. Step 4: Simplify right side
    108,909,784.80x = 16,618,225,261,909,934
  5. Step 5: Solve for x
    x = 16,618,225,261,909,934/108,909,784.80
  6. Step 6: Final answer
    x = 152,587,072.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.