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Finding the Fourth Proportional to 291,665.18, 402,498.08 and 157,529.18

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Solution

The fourth proportional to 291,665.18, 402,498.08 and 157,529.18 is: 217,390.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,665.18 : 402,498.08 = 157,529.18 : x
  2. Step 2: Convert to fraction form
    291,665.18/402,498.08 = 157,529.18/x
  3. Step 3: Cross multiply
    291,665.18x = 402,498.08 × 157,529.18
  4. Step 4: Simplify right side
    291,665.18x = 63,405,189,693.84
  5. Step 5: Solve for x
    x = 63,405,189,693.84/291,665.18
  6. Step 6: Final answer
    x = 217,390.33

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1.5x scale

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.