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Finding the Fourth Proportional to 71,685,913.60, 107,528,870.40 and 71,685,913.60

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Solution

The fourth proportional to 71,685,913.60, 107,528,870.40 and 71,685,913.60 is: 107,528,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,685,913.60 : 107,528,870.40 = 71,685,913.60 : x
  2. Step 2: Convert to fraction form
    71,685,913.60/107,528,870.40 = 71,685,913.60/x
  3. Step 3: Cross multiply
    71,685,913.60x = 107,528,870.40 × 71,685,913.60
  4. Step 4: Simplify right side
    71,685,913.60x = 7,708,305,312,999,997
  5. Step 5: Solve for x
    x = 7,708,305,312,999,997/71,685,913.60
  6. Step 6: Final answer
    x = 107,528,870.40

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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.