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Finding the Fourth Proportional to 10,531,346.60, 15,797,019.90 and 9,355,615.40

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Solution

The fourth proportional to 10,531,346.60, 15,797,019.90 and 9,355,615.40 is: 14,033,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,531,346.60 : 15,797,019.90 = 9,355,615.40 : x
  2. Step 2: Convert to fraction form
    10,531,346.60/15,797,019.90 = 9,355,615.40/x
  3. Step 3: Cross multiply
    10,531,346.60x = 15,797,019.90 × 9,355,615.40
  4. Step 4: Simplify right side
    10,531,346.60x = 147,790,842,650,546.47
  5. Step 5: Solve for x
    x = 147,790,842,650,546.47/10,531,346.60
  6. Step 6: Final answer
    x = 14,033,423.10

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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.