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Finding the Fourth Proportional to 611,792.10, 917,688.15 and 611,792.10

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Solution

The fourth proportional to 611,792.10, 917,688.15 and 611,792.10 is: 917,688.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,792.10 : 917,688.15 = 611,792.10 : x
  2. Step 2: Convert to fraction form
    611,792.10/917,688.15 = 611,792.10/x
  3. Step 3: Cross multiply
    611,792.10x = 917,688.15 × 611,792.10
  4. Step 4: Simplify right side
    611,792.10x = 561,434,360,433.62
  5. Step 5: Solve for x
    x = 561,434,360,433.62/611,792.10
  6. Step 6: Final answer
    x = 917,688.15

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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.