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Finding the Fourth Proportional to 190,459.54, 285,708.45 and 70,548.76

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Solution

The fourth proportional to 190,459.54, 285,708.45 and 70,548.76 is: 105,830.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,459.54 : 285,708.45 = 70,548.76 : x
  2. Step 2: Convert to fraction form
    190,459.54/285,708.45 = 70,548.76/x
  3. Step 3: Cross multiply
    190,459.54x = 285,708.45 × 70,548.76
  4. Step 4: Simplify right side
    190,459.54x = 20,156,376,869.02
  5. Step 5: Solve for x
    x = 20,156,376,869.02/190,459.54
  6. Step 6: Final answer
    x = 105,830.23

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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.