Home / 128,862,575.64-177,830,383.53-70,915,823.64

Finding the Fourth Proportional to 128,862,575.64, 177,830,383.53 and 70,915,823.64

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Solution

The fourth proportional to 128,862,575.64, 177,830,383.53 and 70,915,823.64 is: 97,863,852.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,862,575.64 : 177,830,383.53 = 70,915,823.64 : x
  2. Step 2: Convert to fraction form
    128,862,575.64/177,830,383.53 = 70,915,823.64/x
  3. Step 3: Cross multiply
    128,862,575.64x = 177,830,383.53 × 70,915,823.64
  4. Step 4: Simplify right side
    128,862,575.64x = 12,610,988,116,247,040
  5. Step 5: Solve for x
    x = 12,610,988,116,247,040/128,862,575.64
  6. Step 6: Final answer
    x = 97,863,852.66

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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.