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Finding the Fourth Proportional to 927,885,709.07, 1,390,909,212.18 and 435,717,949.89

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Solution

The fourth proportional to 927,885,709.07, 1,390,909,212.18 and 435,717,949.89 is: 653,145,214.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,885,709.07 : 1,390,909,212.18 = 435,717,949.89 : x
  2. Step 2: Convert to fraction form
    927,885,709.07/1,390,909,212.18 = 435,717,949.89/x
  3. Step 3: Cross multiply
    927,885,709.07x = 1,390,909,212.18 × 435,717,949.89
  4. Step 4: Simplify right side
    927,885,709.07x = 606,044,110,414,184,576
  5. Step 5: Solve for x
    x = 606,044,110,414,184,576/927,885,709.07
  6. Step 6: Final answer
    x = 653,145,214.43

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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.