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Finding the Fourth Proportional to 40,897.80, 61,346.70 and 25,345.80

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Solution

The fourth proportional to 40,897.80, 61,346.70 and 25,345.80 is: 38,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,897.80 : 61,346.70 = 25,345.80 : x
  2. Step 2: Convert to fraction form
    40,897.80/61,346.70 = 25,345.80/x
  3. Step 3: Cross multiply
    40,897.80x = 61,346.70 × 25,345.80
  4. Step 4: Simplify right side
    40,897.80x = 1,554,881,188.86
  5. Step 5: Solve for x
    x = 1,554,881,188.86/40,897.80
  6. Step 6: Final answer
    x = 38,018.70

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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.