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Finding the Fourth Proportional to 70,009,866.60, 105,014,799.90 and 60,572,682.60

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Solution

The fourth proportional to 70,009,866.60, 105,014,799.90 and 60,572,682.60 is: 90,859,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,009,866.60 : 105,014,799.90 = 60,572,682.60 : x
  2. Step 2: Convert to fraction form
    70,009,866.60/105,014,799.90 = 60,572,682.60/x
  3. Step 3: Cross multiply
    70,009,866.60x = 105,014,799.90 × 60,572,682.60
  4. Step 4: Simplify right side
    70,009,866.60x = 6,361,028,142,645,212
  5. Step 5: Solve for x
    x = 6,361,028,142,645,212/70,009,866.60
  6. Step 6: Final answer
    x = 90,859,023.90

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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.