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Finding the Fourth Proportional to 388,698,636.96, 583,049,058.84 and 112,372,343.64

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Solution

The fourth proportional to 388,698,636.96, 583,049,058.84 and 112,372,343.64 is: 168,558,834.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,698,636.96 : 583,049,058.84 = 112,372,343.64 : x
  2. Step 2: Convert to fraction form
    388,698,636.96/583,049,058.84 = 112,372,343.64/x
  3. Step 3: Cross multiply
    388,698,636.96x = 583,049,058.84 × 112,372,343.64
  4. Step 4: Simplify right side
    388,698,636.96x = 65,518,589,198,947,064
  5. Step 5: Solve for x
    x = 65,518,589,198,947,064/388,698,636.96
  6. Step 6: Final answer
    x = 168,558,834.45

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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.