Home / 193,238,434.60-289,633,703.10-78,166,076.20

Finding the Fourth Proportional to 193,238,434.60, 289,633,703.10 and 78,166,076.20

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Solution

The fourth proportional to 193,238,434.60, 289,633,703.10 and 78,166,076.20 is: 117,158,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,238,434.60 : 289,633,703.10 = 78,166,076.20 : x
  2. Step 2: Convert to fraction form
    193,238,434.60/289,633,703.10 = 78,166,076.20/x
  3. Step 3: Cross multiply
    193,238,434.60x = 289,633,703.10 × 78,166,076.20
  4. Step 4: Simplify right side
    193,238,434.60x = 22,639,530,106,602,780
  5. Step 5: Solve for x
    x = 22,639,530,106,602,780/193,238,434.60
  6. Step 6: Final answer
    x = 117,158,525.70

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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.