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Finding the Fourth Proportional to 623,571,931.20, 874,433,976 and 623,571,931.20

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Solution

The fourth proportional to 623,571,931.20, 874,433,976 and 623,571,931.20 is: 874,433,976

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,571,931.20 : 874,433,976 = 623,571,931.20 : x
  2. Step 2: Convert to fraction form
    623,571,931.20/874,433,976 = 623,571,931.20/x
  3. Step 3: Cross multiply
    623,571,931.20x = 874,433,976 × 623,571,931.20
  4. Step 4: Simplify right side
    623,571,931.20x = 545,272,483,121,214,464
  5. Step 5: Solve for x
    x = 545,272,483,121,214,464/623,571,931.20
  6. Step 6: Final answer
    x = 874,433,976

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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.