Home / 128,288,533,815.25-177,038,351,979.89-69,627,356,697.82

Finding the Fourth Proportional to 128,288,533,815.25, 177,038,351,979.89 and 69,627,356,697.82

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Solution

The fourth proportional to 128,288,533,815.25, 177,038,351,979.89 and 69,627,356,697.82 is: 96,085,847,393.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,288,533,815.25 : 177,038,351,979.89 = 69,627,356,697.82 : x
  2. Step 2: Convert to fraction form
    128,288,533,815.25/177,038,351,979.89 = 69,627,356,697.82/x
  3. Step 3: Cross multiply
    128,288,533,815.25x = 177,038,351,979.89 × 69,627,356,697.82
  4. Step 4: Simplify right side
    128,288,533,815.25x = 12,326,712,482,497,833,205,760
  5. Step 5: Solve for x
    x = 12,326,712,482,497,833,205,760/128,288,533,815.25
  6. Step 6: Final answer
    x = 96,085,847,393.42

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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.