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Finding the Fourth Proportional to 103,355.76, 142,609.50 and 67,598.32

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Solution

The fourth proportional to 103,355.76, 142,609.50 and 67,598.32 is: 93,271.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,355.76 : 142,609.50 = 67,598.32 : x
  2. Step 2: Convert to fraction form
    103,355.76/142,609.50 = 67,598.32/x
  3. Step 3: Cross multiply
    103,355.76x = 142,609.50 × 67,598.32
  4. Step 4: Simplify right side
    103,355.76x = 9,640,162,616.04
  5. Step 5: Solve for x
    x = 9,640,162,616.04/103,355.76
  6. Step 6: Final answer
    x = 93,271.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.