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Finding the Fourth Proportional to 2,335,658.40, 3,503,602.80 and 1,215,914.40

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Solution

The fourth proportional to 2,335,658.40, 3,503,602.80 and 1,215,914.40 is: 1,823,931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335,658.40 : 3,503,602.80 = 1,215,914.40 : x
  2. Step 2: Convert to fraction form
    2,335,658.40/3,503,602.80 = 1,215,914.40/x
  3. Step 3: Cross multiply
    2,335,658.40x = 3,503,602.80 × 1,215,914.40
  4. Step 4: Simplify right side
    2,335,658.40x = 4,260,081,096,400.32
  5. Step 5: Solve for x
    x = 4,260,081,096,400.32/2,335,658.40
  6. Step 6: Final answer
    x = 1,823,931.57

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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.