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Finding the Fourth Proportional to 173,894,928.40, 260,873,885.40 and 87,415,699.60

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Solution

The fourth proportional to 173,894,928.40, 260,873,885.40 and 87,415,699.60 is: 131,139,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,894,928.40 : 260,873,885.40 = 87,415,699.60 : x
  2. Step 2: Convert to fraction form
    173,894,928.40/260,873,885.40 = 87,415,699.60/x
  3. Step 3: Cross multiply
    173,894,928.40x = 260,873,885.40 × 87,415,699.60
  4. Step 4: Simplify right side
    173,894,928.40x = 22,804,473,199,611,224
  5. Step 5: Solve for x
    x = 22,804,473,199,611,224/173,894,928.40
  6. Step 6: Final answer
    x = 131,139,380.60

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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.