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Finding the Fourth Proportional to 99,661,363.80, 149,492,045.70 and 55,897,197.45

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Solution

The fourth proportional to 99,661,363.80, 149,492,045.70 and 55,897,197.45 is: 83,845,796.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661,363.80 : 149,492,045.70 = 55,897,197.45 : x
  2. Step 2: Convert to fraction form
    99,661,363.80/149,492,045.70 = 55,897,197.45/x
  3. Step 3: Cross multiply
    99,661,363.80x = 149,492,045.70 × 55,897,197.45
  4. Step 4: Simplify right side
    99,661,363.80x = 8,356,186,395,697,323
  5. Step 5: Solve for x
    x = 8,356,186,395,697,323/99,661,363.80
  6. Step 6: Final answer
    x = 83,845,796.18

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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.