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Finding the Fourth Proportional to 624,342,649.60, 935,506,204.80 and 521,550,150.40

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Solution

The fourth proportional to 624,342,649.60, 935,506,204.80 and 521,550,150.40 is: 781,483,376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,342,649.60 : 935,506,204.80 = 521,550,150.40 : x
  2. Step 2: Convert to fraction form
    624,342,649.60/935,506,204.80 = 521,550,150.40/x
  3. Step 3: Cross multiply
    624,342,649.60x = 935,506,204.80 × 521,550,150.40
  4. Step 4: Simplify right side
    624,342,649.60x = 487,913,401,813,573,184
  5. Step 5: Solve for x
    x = 487,913,401,813,573,184/624,342,649.60
  6. Step 6: Final answer
    x = 781,483,376.36

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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.