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Finding the Fourth Proportional to 20,830,056.90, 29,090,335.13 and 20,830,056.90

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Solution

The fourth proportional to 20,830,056.90, 29,090,335.13 and 20,830,056.90 is: 29,090,335.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830,056.90 : 29,090,335.13 = 20,830,056.90 : x
  2. Step 2: Convert to fraction form
    20,830,056.90/29,090,335.13 = 20,830,056.90/x
  3. Step 3: Cross multiply
    20,830,056.90x = 29,090,335.13 × 20,830,056.90
  4. Step 4: Simplify right side
    20,830,056.90x = 605,953,335,893,818.62
  5. Step 5: Solve for x
    x = 605,953,335,893,818.62/20,830,056.90
  6. Step 6: Final answer
    x = 29,090,335.13

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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.