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Finding the Fourth Proportional to 99,661,706.60, 149,492,559.90 and 98,989,860.20

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Solution

The fourth proportional to 99,661,706.60, 149,492,559.90 and 98,989,860.20 is: 148,484,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661,706.60 : 149,492,559.90 = 98,989,860.20 : x
  2. Step 2: Convert to fraction form
    99,661,706.60/149,492,559.90 = 98,989,860.20/x
  3. Step 3: Cross multiply
    99,661,706.60x = 149,492,559.90 × 98,989,860.20
  4. Step 4: Simplify right side
    99,661,706.60x = 14,798,247,605,441,128
  5. Step 5: Solve for x
    x = 14,798,247,605,441,128/99,661,706.60
  6. Step 6: Final answer
    x = 148,484,790.30

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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.