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Finding the Fourth Proportional to 74,880,121.80, 105,134,501.40 and 74,880,121.80

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Solution

The fourth proportional to 74,880,121.80, 105,134,501.40 and 74,880,121.80 is: 105,134,501.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,880,121.80 : 105,134,501.40 = 74,880,121.80 : x
  2. Step 2: Convert to fraction form
    74,880,121.80/105,134,501.40 = 74,880,121.80/x
  3. Step 3: Cross multiply
    74,880,121.80x = 105,134,501.40 × 74,880,121.80
  4. Step 4: Simplify right side
    74,880,121.80x = 7,872,484,270,214,271
  5. Step 5: Solve for x
    x = 7,872,484,270,214,271/74,880,121.80
  6. Step 6: Final answer
    x = 105,134,501.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.