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Finding the Fourth Proportional to 157,547.34, 217,410.21 and 85,928.76

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Solution

The fourth proportional to 157,547.34, 217,410.21 and 85,928.76 is: 118,578.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,547.34 : 217,410.21 = 85,928.76 : x
  2. Step 2: Convert to fraction form
    157,547.34/217,410.21 = 85,928.76/x
  3. Step 3: Cross multiply
    157,547.34x = 217,410.21 × 85,928.76
  4. Step 4: Simplify right side
    157,547.34x = 18,681,789,756.64
  5. Step 5: Solve for x
    x = 18,681,789,756.64/157,547.34
  6. Step 6: Final answer
    x = 118,578.90

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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.