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Finding the Fourth Proportional to 76,595.84, 105,700.40 and 42,604.20

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Solution

The fourth proportional to 76,595.84, 105,700.40 and 42,604.20 is: 58,792.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,595.84 : 105,700.40 = 42,604.20 : x
  2. Step 2: Convert to fraction form
    76,595.84/105,700.40 = 42,604.20/x
  3. Step 3: Cross multiply
    76,595.84x = 105,700.40 × 42,604.20
  4. Step 4: Simplify right side
    76,595.84x = 4,503,280,981.68
  5. Step 5: Solve for x
    x = 4,503,280,981.68/76,595.84
  6. Step 6: Final answer
    x = 58,792.76

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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.