Home / 128,120,824.91-176,805,814.23-69,382,127.41

Finding the Fourth Proportional to 128,120,824.91, 176,805,814.23 and 69,382,127.41

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Solution

The fourth proportional to 128,120,824.91, 176,805,814.23 and 69,382,127.41 is: 95,746,835.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,120,824.91 : 176,805,814.23 = 69,382,127.41 : x
  2. Step 2: Convert to fraction form
    128,120,824.91/176,805,814.23 = 69,382,127.41/x
  3. Step 3: Cross multiply
    128,120,824.91x = 176,805,814.23 × 69,382,127.41
  4. Step 4: Simplify right side
    128,120,824.91x = 12,267,163,529,292,636
  5. Step 5: Solve for x
    x = 12,267,163,529,292,636/128,120,824.91
  6. Step 6: Final answer
    x = 95,746,835.36

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1.5x scale

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.