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Finding the Fourth Proportional to 70,009,863.60, 105,014,795.40 and 60,572,679.60

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Solution

The fourth proportional to 70,009,863.60, 105,014,795.40 and 60,572,679.60 is: 90,859,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,009,863.60 : 105,014,795.40 = 60,572,679.60 : x
  2. Step 2: Convert to fraction form
    70,009,863.60/105,014,795.40 = 60,572,679.60/x
  3. Step 3: Cross multiply
    70,009,863.60x = 105,014,795.40 × 60,572,679.60
  4. Step 4: Simplify right side
    70,009,863.60x = 6,361,027,555,023,754
  5. Step 5: Solve for x
    x = 6,361,027,555,023,754/70,009,863.60
  6. Step 6: Final answer
    x = 90,859,019.40

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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.