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Finding the Fourth Proportional to 74,208,019.60, 103,678,890.80 and 74,208,019.60

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Solution

The fourth proportional to 74,208,019.60, 103,678,890.80 and 74,208,019.60 is: 103,678,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,208,019.60 : 103,678,890.80 = 74,208,019.60 : x
  2. Step 2: Convert to fraction form
    74,208,019.60/103,678,890.80 = 74,208,019.60/x
  3. Step 3: Cross multiply
    74,208,019.60x = 103,678,890.80 × 74,208,019.60
  4. Step 4: Simplify right side
    74,208,019.60x = 7,693,805,160,592,659
  5. Step 5: Solve for x
    x = 7,693,805,160,592,659/74,208,019.60
  6. Step 6: Final answer
    x = 103,678,890.80

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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.