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Finding the Fourth Proportional to 103,758.76, 155,403.90 and 62,117.80

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Solution

The fourth proportional to 103,758.76, 155,403.90 and 62,117.80 is: 93,036.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,758.76 : 155,403.90 = 62,117.80 : x
  2. Step 2: Convert to fraction form
    103,758.76/155,403.90 = 62,117.80/x
  3. Step 3: Cross multiply
    103,758.76x = 155,403.90 × 62,117.80
  4. Step 4: Simplify right side
    103,758.76x = 9,653,348,379.42
  5. Step 5: Solve for x
    x = 9,653,348,379.42/103,758.76
  6. Step 6: Final answer
    x = 93,036.47

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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.