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Finding the Fourth Proportional to 476,900.16, 715,347.40 and 121,913.62

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Solution

The fourth proportional to 476,900.16, 715,347.40 and 121,913.62 is: 182,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,900.16 : 715,347.40 = 121,913.62 : x
  2. Step 2: Convert to fraction form
    476,900.16/715,347.40 = 121,913.62/x
  3. Step 3: Cross multiply
    476,900.16x = 715,347.40 × 121,913.62
  4. Step 4: Simplify right side
    476,900.16x = 87,210,591,091.59
  5. Step 5: Solve for x
    x = 87,210,591,091.59/476,900.16
  6. Step 6: Final answer
    x = 182,869.70

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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.