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Finding the Fourth Proportional to 315,428,944.80, 473,143,417.20 and 315,428,944.80

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Solution

The fourth proportional to 315,428,944.80, 473,143,417.20 and 315,428,944.80 is: 473,143,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,428,944.80 : 473,143,417.20 = 315,428,944.80 : x
  2. Step 2: Convert to fraction form
    315,428,944.80/473,143,417.20 = 315,428,944.80/x
  3. Step 3: Cross multiply
    315,428,944.80x = 473,143,417.20 × 315,428,944.80
  4. Step 4: Simplify right side
    315,428,944.80x = 149,243,128,826,462,176
  5. Step 5: Solve for x
    x = 149,243,128,826,462,176/315,428,944.80
  6. Step 6: Final answer
    x = 473,143,417.20

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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.