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Finding the Fourth Proportional to 70,668,303.60, 106,002,455.40 and 66,413,276.40

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Solution

The fourth proportional to 70,668,303.60, 106,002,455.40 and 66,413,276.40 is: 99,619,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,668,303.60 : 106,002,455.40 = 66,413,276.40 : x
  2. Step 2: Convert to fraction form
    70,668,303.60/106,002,455.40 = 66,413,276.40/x
  3. Step 3: Cross multiply
    70,668,303.60x = 106,002,455.40 × 66,413,276.40
  4. Step 4: Simplify right side
    70,668,303.60x = 7,039,970,369,558,873
  5. Step 5: Solve for x
    x = 7,039,970,369,558,873/70,668,303.60
  6. Step 6: Final answer
    x = 99,619,914.60

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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.