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Finding the Fourth Proportional to 136,736,938.47, 188,696,951.64 and 74,013,024

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Solution

The fourth proportional to 136,736,938.47, 188,696,951.64 and 74,013,024 is: 102,137,960.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,736,938.47 : 188,696,951.64 = 74,013,024 : x
  2. Step 2: Convert to fraction form
    136,736,938.47/188,696,951.64 = 74,013,024/x
  3. Step 3: Cross multiply
    136,736,938.47x = 188,696,951.64 × 74,013,024
  4. Step 4: Simplify right side
    136,736,938.47x = 13,966,032,010,458,158
  5. Step 5: Solve for x
    x = 13,966,032,010,458,158/136,736,938.47
  6. Step 6: Final answer
    x = 102,137,960.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.