Home / 128,805,787.28-177,746,856.36-70,068,527.12

Finding the Fourth Proportional to 128,805,787.28, 177,746,856.36 and 70,068,527.12

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Solution

The fourth proportional to 128,805,787.28, 177,746,856.36 and 70,068,527.12 is: 96,691,776.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,805,787.28 : 177,746,856.36 = 70,068,527.12 : x
  2. Step 2: Convert to fraction form
    128,805,787.28/177,746,856.36 = 70,068,527.12/x
  3. Step 3: Cross multiply
    128,805,787.28x = 177,746,856.36 × 70,068,527.12
  4. Step 4: Simplify right side
    128,805,787.28x = 12,454,460,425,355,406
  5. Step 5: Solve for x
    x = 12,454,460,425,355,406/128,805,787.28
  6. Step 6: Final answer
    x = 96,691,776.73

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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.