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Finding the Fourth Proportional to 602,428,999.20, 903,643,498.80 and 602,428,999.20

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Solution

The fourth proportional to 602,428,999.20, 903,643,498.80 and 602,428,999.20 is: 903,643,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,428,999.20 : 903,643,498.80 = 602,428,999.20 : x
  2. Step 2: Convert to fraction form
    602,428,999.20/903,643,498.80 = 602,428,999.20/x
  3. Step 3: Cross multiply
    602,428,999.20x = 903,643,498.80 × 602,428,999.20
  4. Step 4: Simplify right side
    602,428,999.20x = 544,381,048,615,670,400
  5. Step 5: Solve for x
    x = 544,381,048,615,670,400/602,428,999.20
  6. Step 6: Final answer
    x = 903,643,498.80

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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.