Home / 128,455,038.54-177,268,128.24-69,717,704.42

Finding the Fourth Proportional to 128,455,038.54, 177,268,128.24 and 69,717,704.42

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Solution

The fourth proportional to 128,455,038.54, 177,268,128.24 and 69,717,704.42 is: 96,210,527.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,455,038.54 : 177,268,128.24 = 69,717,704.42 : x
  2. Step 2: Convert to fraction form
    128,455,038.54/177,268,128.24 = 69,717,704.42/x
  3. Step 3: Cross multiply
    128,455,038.54x = 177,268,128.24 × 69,717,704.42
  4. Step 4: Simplify right side
    128,455,038.54x = 12,358,726,966,836,636
  5. Step 5: Solve for x
    x = 12,358,726,966,836,636/128,455,038.54
  6. Step 6: Final answer
    x = 96,210,527.10

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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.