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Finding the Fourth Proportional to 99,621,640.80, 149,495,446.80 and 58,681,000.80

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Solution

The fourth proportional to 99,621,640.80, 149,495,446.80 and 58,681,000.80 is: 88,058,602.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,621,640.80 : 149,495,446.80 = 58,681,000.80 : x
  2. Step 2: Convert to fraction form
    99,621,640.80/149,495,446.80 = 58,681,000.80/x
  3. Step 3: Cross multiply
    99,621,640.80x = 149,495,446.80 × 58,681,000.80
  4. Step 4: Simplify right side
    99,621,640.80x = 8,772,542,433,267,158
  5. Step 5: Solve for x
    x = 8,772,542,433,267,158/99,621,640.80
  6. Step 6: Final answer
    x = 88,058,602.16

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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.