Home / 128,742,991.83-177,666,252.96-70,005,236.05

Finding the Fourth Proportional to 128,742,991.83, 177,666,252.96 and 70,005,236.05

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Solution

The fourth proportional to 128,742,991.83, 177,666,252.96 and 70,005,236.05 is: 96,607,728.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742,991.83 : 177,666,252.96 = 70,005,236.05 : x
  2. Step 2: Convert to fraction form
    128,742,991.83/177,666,252.96 = 70,005,236.05/x
  3. Step 3: Cross multiply
    128,742,991.83x = 177,666,252.96 × 70,005,236.05
  4. Step 4: Simplify right side
    128,742,991.83x = 12,437,567,977,068,414
  5. Step 5: Solve for x
    x = 12,437,567,977,068,414/128,742,991.83
  6. Step 6: Final answer
    x = 96,607,728.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.