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Finding the Fourth Proportional to 93,312,907.80, 139,969,361.70 and 57,431,333.40

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Solution

The fourth proportional to 93,312,907.80, 139,969,361.70 and 57,431,333.40 is: 86,147,000.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,907.80 : 139,969,361.70 = 57,431,333.40 : x
  2. Step 2: Convert to fraction form
    93,312,907.80/139,969,361.70 = 57,431,333.40/x
  3. Step 3: Cross multiply
    93,312,907.80x = 139,969,361.70 × 57,431,333.40
  4. Step 4: Simplify right side
    93,312,907.80x = 8,038,627,077,577,890
  5. Step 5: Solve for x
    x = 8,038,627,077,577,890/93,312,907.80
  6. Step 6: Final answer
    x = 86,147,000.10

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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.