Home / 128,862,599.76-177,830,416.62-70,915,847.76

Finding the Fourth Proportional to 128,862,599.76, 177,830,416.62 and 70,915,847.76

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Solution

The fourth proportional to 128,862,599.76, 177,830,416.62 and 70,915,847.76 is: 97,863,885.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,862,599.76 : 177,830,416.62 = 70,915,847.76 : x
  2. Step 2: Convert to fraction form
    128,862,599.76/177,830,416.62 = 70,915,847.76/x
  3. Step 3: Cross multiply
    128,862,599.76x = 177,830,416.62 × 70,915,847.76
  4. Step 4: Simplify right side
    128,862,599.76x = 12,610,994,752,121,296
  5. Step 5: Solve for x
    x = 12,610,994,752,121,296/128,862,599.76
  6. Step 6: Final answer
    x = 97,863,885.84

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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.