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Finding the Fourth Proportional to 128,718,114.30, 193,077,171.45 and 128,718,114.30

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Solution

The fourth proportional to 128,718,114.30, 193,077,171.45 and 128,718,114.30 is: 193,077,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,718,114.30 : 193,077,171.45 = 128,718,114.30 : x
  2. Step 2: Convert to fraction form
    128,718,114.30/193,077,171.45 = 128,718,114.30/x
  3. Step 3: Cross multiply
    128,718,114.30x = 193,077,171.45 × 128,718,114.30
  4. Step 4: Simplify right side
    128,718,114.30x = 24,852,529,423,421,796
  5. Step 5: Solve for x
    x = 24,852,529,423,421,796/128,718,114.30
  6. Step 6: Final answer
    x = 193,077,171.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.