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Finding the Fourth Proportional to 245,066,125.20, 343,953,509.70 and 245,066,125.20

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Solution

The fourth proportional to 245,066,125.20, 343,953,509.70 and 245,066,125.20 is: 343,953,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,066,125.20 : 343,953,509.70 = 245,066,125.20 : x
  2. Step 2: Convert to fraction form
    245,066,125.20/343,953,509.70 = 245,066,125.20/x
  3. Step 3: Cross multiply
    245,066,125.20x = 343,953,509.70 × 245,066,125.20
  4. Step 4: Simplify right side
    245,066,125.20x = 84,291,353,871,119,600
  5. Step 5: Solve for x
    x = 84,291,353,871,119,600/245,066,125.20
  6. Step 6: Final answer
    x = 343,953,509.70

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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.