Home / 128,753,668.23-177,681,327.35-70,017,609.71

Finding the Fourth Proportional to 128,753,668.23, 177,681,327.35 and 70,017,609.71

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Solution

The fourth proportional to 128,753,668.23, 177,681,327.35 and 70,017,609.71 is: 96,624,989.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,753,668.23 : 177,681,327.35 = 70,017,609.71 : x
  2. Step 2: Convert to fraction form
    128,753,668.23/177,681,327.35 = 70,017,609.71/x
  3. Step 3: Cross multiply
    128,753,668.23x = 177,681,327.35 × 70,017,609.71
  4. Step 4: Simplify right side
    128,753,668.23x = 12,440,821,829,908,554
  5. Step 5: Solve for x
    x = 12,440,821,829,908,554/128,753,668.23
  6. Step 6: Final answer
    x = 96,624,989.42

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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.