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Finding the Fourth Proportional to 291,798.53, 402,712.93 and 171,041.28

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Solution

The fourth proportional to 291,798.53, 402,712.93 and 171,041.28 is: 236,055.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,798.53 : 402,712.93 = 171,041.28 : x
  2. Step 2: Convert to fraction form
    291,798.53/402,712.93 = 171,041.28/x
  3. Step 3: Cross multiply
    291,798.53x = 402,712.93 × 171,041.28
  4. Step 4: Simplify right side
    291,798.53x = 68,880,535,019.75
  5. Step 5: Solve for x
    x = 68,880,535,019.75/291,798.53
  6. Step 6: Final answer
    x = 236,055.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.