Home / 128,518,115.07-177,358,080.15-69,783,255.75

Finding the Fourth Proportional to 128,518,115.07, 177,358,080.15 and 69,783,255.75

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Solution

The fourth proportional to 128,518,115.07, 177,358,080.15 and 69,783,255.75 is: 96,302,566.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,518,115.07 : 177,358,080.15 = 69,783,255.75 : x
  2. Step 2: Convert to fraction form
    128,518,115.07/177,358,080.15 = 69,783,255.75/x
  3. Step 3: Cross multiply
    128,518,115.07x = 177,358,080.15 × 69,783,255.75
  4. Step 4: Simplify right side
    128,518,115.07x = 12,376,624,266,436,448
  5. Step 5: Solve for x
    x = 12,376,624,266,436,448/128,518,115.07
  6. Step 6: Final answer
    x = 96,302,566.06

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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.