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Finding the Fourth Proportional to 107,908.60, 161,862.90 and 70,583.80

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Solution

The fourth proportional to 107,908.60, 161,862.90 and 70,583.80 is: 105,875.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,908.60 : 161,862.90 = 70,583.80 : x
  2. Step 2: Convert to fraction form
    107,908.60/161,862.90 = 70,583.80/x
  3. Step 3: Cross multiply
    107,908.60x = 161,862.90 × 70,583.80
  4. Step 4: Simplify right side
    107,908.60x = 11,424,898,561.02
  5. Step 5: Solve for x
    x = 11,424,898,561.02/107,908.60
  6. Step 6: Final answer
    x = 105,875.70

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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.