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Finding the Fourth Proportional to 74,679,963.60, 112,019,945.40 and 74,201,666.70

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Solution

The fourth proportional to 74,679,963.60, 112,019,945.40 and 74,201,666.70 is: 111,302,500.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,679,963.60 : 112,019,945.40 = 74,201,666.70 : x
  2. Step 2: Convert to fraction form
    74,679,963.60/112,019,945.40 = 74,201,666.70/x
  3. Step 3: Cross multiply
    74,679,963.60x = 112,019,945.40 × 74,201,666.70
  4. Step 4: Simplify right side
    74,679,963.60x = 8,312,066,652,322,999
  5. Step 5: Solve for x
    x = 8,312,066,652,322,999/74,679,963.60
  6. Step 6: Final answer
    x = 111,302,500.05

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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.