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Finding the Fourth Proportional to 74,662,916.40, 111,994,374.60 and 61,908,332.40

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Solution

The fourth proportional to 74,662,916.40, 111,994,374.60 and 61,908,332.40 is: 92,862,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,662,916.40 : 111,994,374.60 = 61,908,332.40 : x
  2. Step 2: Convert to fraction form
    74,662,916.40/111,994,374.60 = 61,908,332.40/x
  3. Step 3: Cross multiply
    74,662,916.40x = 111,994,374.60 × 61,908,332.40
  4. Step 4: Simplify right side
    74,662,916.40x = 6,933,384,969,666,917
  5. Step 5: Solve for x
    x = 6,933,384,969,666,917/74,662,916.40
  6. Step 6: Final answer
    x = 92,862,498.60

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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.