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Finding the Fourth Proportional to 118,035.68, 162,870.18 and 70,287.80

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Solution

The fourth proportional to 118,035.68, 162,870.18 and 70,287.80 is: 96,985.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,035.68 : 162,870.18 = 70,287.80 : x
  2. Step 2: Convert to fraction form
    118,035.68/162,870.18 = 70,287.80/x
  3. Step 3: Cross multiply
    118,035.68x = 162,870.18 × 70,287.80
  4. Step 4: Simplify right side
    118,035.68x = 11,447,786,637.80
  5. Step 5: Solve for x
    x = 11,447,786,637.80/118,035.68
  6. Step 6: Final answer
    x = 96,985.82

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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.