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Finding the Fourth Proportional to 130,521.90, 195,345.45 and 130,521.90

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Solution

The fourth proportional to 130,521.90, 195,345.45 and 130,521.90 is: 195,345.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,521.90 : 195,345.45 = 130,521.90 : x
  2. Step 2: Convert to fraction form
    130,521.90/195,345.45 = 130,521.90/x
  3. Step 3: Cross multiply
    130,521.90x = 195,345.45 × 130,521.90
  4. Step 4: Simplify right side
    130,521.90x = 25,496,859,290.36
  5. Step 5: Solve for x
    x = 25,496,859,290.36/130,521.90
  6. Step 6: Final answer
    x = 195,345.45

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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.