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Finding the Fourth Proportional to 163,308,981.60, 244,963,472.40 and 72,432,570.60

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Solution

The fourth proportional to 163,308,981.60, 244,963,472.40 and 72,432,570.60 is: 108,648,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,308,981.60 : 244,963,472.40 = 72,432,570.60 : x
  2. Step 2: Convert to fraction form
    163,308,981.60/244,963,472.40 = 72,432,570.60/x
  3. Step 3: Cross multiply
    163,308,981.60x = 244,963,472.40 × 72,432,570.60
  4. Step 4: Simplify right side
    163,308,981.60x = 17,743,334,009,034,150
  5. Step 5: Solve for x
    x = 17,743,334,009,034,150/163,308,981.60
  6. Step 6: Final answer
    x = 108,648,855.90

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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.