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Finding the Fourth Proportional to 103,678.92, 155,810.88 and 61,566.30

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Solution

The fourth proportional to 103,678.92, 155,810.88 and 61,566.30 is: 92,523.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,678.92 : 155,810.88 = 61,566.30 : x
  2. Step 2: Convert to fraction form
    103,678.92/155,810.88 = 61,566.30/x
  3. Step 3: Cross multiply
    103,678.92x = 155,810.88 × 61,566.30
  4. Step 4: Simplify right side
    103,678.92x = 9,592,699,381.34
  5. Step 5: Solve for x
    x = 9,592,699,381.34/103,678.92
  6. Step 6: Final answer
    x = 92,523.14

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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.