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Finding the Fourth Proportional to 70,713,866.60, 97,584,430.85 and 39,351,378.38

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Solution

The fourth proportional to 70,713,866.60, 97,584,430.85 and 39,351,378.38 is: 54,304,509.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,713,866.60 : 97,584,430.85 = 39,351,378.38 : x
  2. Step 2: Convert to fraction form
    70,713,866.60/97,584,430.85 = 39,351,378.38/x
  3. Step 3: Cross multiply
    70,713,866.60x = 97,584,430.85 × 39,351,378.38
  4. Step 4: Simplify right side
    70,713,866.60x = 3,840,081,862,422,499
  5. Step 5: Solve for x
    x = 3,840,081,862,422,499/70,713,866.60
  6. Step 6: Final answer
    x = 54,304,509.81

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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.