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Finding the Fourth Proportional to 70,871,709.60, 106,307,564.40 and 60,668,042.40

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Solution

The fourth proportional to 70,871,709.60, 106,307,564.40 and 60,668,042.40 is: 91,002,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,871,709.60 : 106,307,564.40 = 60,668,042.40 : x
  2. Step 2: Convert to fraction form
    70,871,709.60/106,307,564.40 = 60,668,042.40/x
  3. Step 3: Cross multiply
    70,871,709.60x = 106,307,564.40 × 60,668,042.40
  4. Step 4: Simplify right side
    70,871,709.60x = 6,449,471,824,459,931
  5. Step 5: Solve for x
    x = 6,449,471,824,459,931/70,871,709.60
  6. Step 6: Final answer
    x = 91,002,063.60

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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.