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Finding the Fourth Proportional to 103,690.98, 155,492.45 and 43,746.35

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Solution

The fourth proportional to 103,690.98, 155,492.45 and 43,746.35 is: 65,600.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.98 : 155,492.45 = 43,746.35 : x
  2. Step 2: Convert to fraction form
    103,690.98/155,492.45 = 43,746.35/x
  3. Step 3: Cross multiply
    103,690.98x = 155,492.45 × 43,746.35
  4. Step 4: Simplify right side
    103,690.98x = 6,802,226,143.86
  5. Step 5: Solve for x
    x = 6,802,226,143.86/103,690.98
  6. Step 6: Final answer
    x = 65,600.94

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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.