Home / 128,836,009.24-177,788,368.12-70,098,902.76

Finding the Fourth Proportional to 128,836,009.24, 177,788,368.12 and 70,098,902.76

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Solution

The fourth proportional to 128,836,009.24, 177,788,368.12 and 70,098,902.76 is: 96,733,588.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,836,009.24 : 177,788,368.12 = 70,098,902.76 : x
  2. Step 2: Convert to fraction form
    128,836,009.24/177,788,368.12 = 70,098,902.76/x
  3. Step 3: Cross multiply
    128,836,009.24x = 177,788,368.12 × 70,098,902.76
  4. Step 4: Simplify right side
    128,836,009.24x = 12,462,769,528,702,966
  5. Step 5: Solve for x
    x = 12,462,769,528,702,966/128,836,009.24
  6. Step 6: Final answer
    x = 96,733,588.71

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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.