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Finding the Fourth Proportional to 703,663,000.01, 971,052,275.18 and 386,128,558.67

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Solution

The fourth proportional to 703,663,000.01, 971,052,275.18 and 386,128,558.67 is: 532,855,948.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,663,000.01 : 971,052,275.18 = 386,128,558.67 : x
  2. Step 2: Convert to fraction form
    703,663,000.01/971,052,275.18 = 386,128,558.67/x
  3. Step 3: Cross multiply
    703,663,000.01x = 971,052,275.18 × 386,128,558.67
  4. Step 4: Simplify right side
    703,663,000.01x = 374,951,015,401,691,712
  5. Step 5: Solve for x
    x = 374,951,015,401,691,712/703,663,000.01
  6. Step 6: Final answer
    x = 532,855,948.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.