Home / 129,288,456.28-178,421,855.52-70,554,905.92

Finding the Fourth Proportional to 129,288,456.28, 178,421,855.52 and 70,554,905.92

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Solution

The fourth proportional to 129,288,456.28, 178,421,855.52 and 70,554,905.92 is: 97,367,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,288,456.28 : 178,421,855.52 = 70,554,905.92 : x
  2. Step 2: Convert to fraction form
    129,288,456.28/178,421,855.52 = 70,554,905.92/x
  3. Step 3: Cross multiply
    129,288,456.28x = 178,421,855.52 × 70,554,905.92
  4. Step 4: Simplify right side
    129,288,456.28x = 12,588,537,230,285,434
  5. Step 5: Solve for x
    x = 12,588,537,230,285,434/129,288,456.28
  6. Step 6: Final answer
    x = 97,367,836.17

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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.