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Finding the Fourth Proportional to 301,516,939.80, 423,079,230.60 and 301,516,939.80

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Solution

The fourth proportional to 301,516,939.80, 423,079,230.60 and 301,516,939.80 is: 423,079,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,516,939.80 : 423,079,230.60 = 301,516,939.80 : x
  2. Step 2: Convert to fraction form
    301,516,939.80/423,079,230.60 = 301,516,939.80/x
  3. Step 3: Cross multiply
    301,516,939.80x = 423,079,230.60 × 301,516,939.80
  4. Step 4: Simplify right side
    301,516,939.80x = 127,565,554,903,450,528
  5. Step 5: Solve for x
    x = 127,565,554,903,450,528/301,516,939.80
  6. Step 6: Final answer
    x = 423,079,230.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.