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Finding the Fourth Proportional to 7,430,812.60, 10,381,880 and 7,430,812.60

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Solution

The fourth proportional to 7,430,812.60, 10,381,880 and 7,430,812.60 is: 10,381,880

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430,812.60 : 10,381,880 = 7,430,812.60 : x
  2. Step 2: Convert to fraction form
    7,430,812.60/10,381,880 = 7,430,812.60/x
  3. Step 3: Cross multiply
    7,430,812.60x = 10,381,880 × 7,430,812.60
  4. Step 4: Simplify right side
    7,430,812.60x = 77,145,804,715,688
  5. Step 5: Solve for x
    x = 77,145,804,715,688/7,430,812.60
  6. Step 6: Final answer
    x = 10,381,880

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1.5x scale

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.