Home / 128,128,436.20-176,817,255.78-70,181,684.20

Finding the Fourth Proportional to 128,128,436.20, 176,817,255.78 and 70,181,684.20

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Solution

The fourth proportional to 128,128,436.20, 176,817,255.78 and 70,181,684.20 is: 96,850,731.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,128,436.20 : 176,817,255.78 = 70,181,684.20 : x
  2. Step 2: Convert to fraction form
    128,128,436.20/176,817,255.78 = 70,181,684.20/x
  3. Step 3: Cross multiply
    128,128,436.20x = 176,817,255.78 × 70,181,684.20
  4. Step 4: Simplify right side
    128,128,436.20x = 12,409,332,806,262,586
  5. Step 5: Solve for x
    x = 12,409,332,806,262,586/128,128,436.20
  6. Step 6: Final answer
    x = 96,850,731.77

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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.