Home / 217,063,202.50-299,513,499.51-128,954,935.72

Finding the Fourth Proportional to 217,063,202.50, 299,513,499.51 and 128,954,935.72

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Solution

The fourth proportional to 217,063,202.50, 299,513,499.51 and 128,954,935.72 is: 177,937,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,063,202.50 : 299,513,499.51 = 128,954,935.72 : x
  2. Step 2: Convert to fraction form
    217,063,202.50/299,513,499.51 = 128,954,935.72/x
  3. Step 3: Cross multiply
    217,063,202.50x = 299,513,499.51 × 128,954,935.72
  4. Step 4: Simplify right side
    217,063,202.50x = 38,623,744,076,584,296
  5. Step 5: Solve for x
    x = 38,623,744,076,584,296/217,063,202.50
  6. Step 6: Final answer
    x = 177,937,778.64

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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.