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Finding the Fourth Proportional to 70,292.46, 105,691.59 and 64,812.84

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Solution

The fourth proportional to 70,292.46, 105,691.59 and 64,812.84 is: 97,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,292.46 : 105,691.59 = 64,812.84 : x
  2. Step 2: Convert to fraction form
    70,292.46/105,691.59 = 64,812.84/x
  3. Step 3: Cross multiply
    70,292.46x = 105,691.59 × 64,812.84
  4. Step 4: Simplify right side
    70,292.46x = 6,850,172,112.02
  5. Step 5: Solve for x
    x = 6,850,172,112.02/70,292.46
  6. Step 6: Final answer
    x = 97,452.45

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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.