Home / 128,858,315.13-177,824,503.91-70,911,563.13

Finding the Fourth Proportional to 128,858,315.13, 177,824,503.91 and 70,911,563.13

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Solution

The fourth proportional to 128,858,315.13, 177,824,503.91 and 70,911,563.13 is: 97,857,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,858,315.13 : 177,824,503.91 = 70,911,563.13 : x
  2. Step 2: Convert to fraction form
    128,858,315.13/177,824,503.91 = 70,911,563.13/x
  3. Step 3: Cross multiply
    128,858,315.13x = 177,824,503.91 × 70,911,563.13
  4. Step 4: Simplify right side
    128,858,315.13x = 12,609,813,535,252,174
  5. Step 5: Solve for x
    x = 12,609,813,535,252,174/128,858,315.13
  6. Step 6: Final answer
    x = 97,857,973.10

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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.