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Finding the Fourth Proportional to 291,953.40, 402,895.80 and 157,817.40

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Solution

The fourth proportional to 291,953.40, 402,895.80 and 157,817.40 is: 217,788.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,953.40 : 402,895.80 = 157,817.40 : x
  2. Step 2: Convert to fraction form
    291,953.40/402,895.80 = 157,817.40/x
  3. Step 3: Cross multiply
    291,953.40x = 402,895.80 × 157,817.40
  4. Step 4: Simplify right side
    291,953.40x = 63,583,967,626.92
  5. Step 5: Solve for x
    x = 63,583,967,626.92/291,953.40
  6. Step 6: Final answer
    x = 217,788.07

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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.