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Finding the Fourth Proportional to 103,798,908.40, 155,592,074.40 and 60,645,899.20

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Solution

The fourth proportional to 103,798,908.40, 155,592,074.40 and 60,645,899.20 is: 90,906,748.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,798,908.40 : 155,592,074.40 = 60,645,899.20 : x
  2. Step 2: Convert to fraction form
    103,798,908.40/155,592,074.40 = 60,645,899.20/x
  3. Step 3: Cross multiply
    103,798,908.40x = 155,592,074.40 × 60,645,899.20
  4. Step 4: Simplify right side
    103,798,908.40x = 9,436,021,260,381,302
  5. Step 5: Solve for x
    x = 9,436,021,260,381,302/103,798,908.40
  6. Step 6: Final answer
    x = 90,906,748.50

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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.