Home / 128,849,640.41-177,811,009.09-70,111,293.51

Finding the Fourth Proportional to 128,849,640.41, 177,811,009.09 and 70,111,293.51

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Solution

The fourth proportional to 128,849,640.41, 177,811,009.09 and 70,111,293.51 is: 96,752,771.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,849,640.41 : 177,811,009.09 = 70,111,293.51 : x
  2. Step 2: Convert to fraction form
    128,849,640.41/177,811,009.09 = 70,111,293.51/x
  3. Step 3: Cross multiply
    128,849,640.41x = 177,811,009.09 × 70,111,293.51
  4. Step 4: Simplify right side
    128,849,640.41x = 12,466,559,847,618,270
  5. Step 5: Solve for x
    x = 12,466,559,847,618,270/128,849,640.41
  6. Step 6: Final answer
    x = 96,752,771.74

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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.