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Finding the Fourth Proportional to 612,158.82, 918,254.66 and 191,434.70

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Solution

The fourth proportional to 612,158.82, 918,254.66 and 191,434.70 is: 287,157.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,158.82 : 918,254.66 = 191,434.70 : x
  2. Step 2: Convert to fraction form
    612,158.82/918,254.66 = 191,434.70/x
  3. Step 3: Cross multiply
    612,158.82x = 918,254.66 × 191,434.70
  4. Step 4: Simplify right side
    612,158.82x = 175,785,799,812.26
  5. Step 5: Solve for x
    x = 175,785,799,812.26/612,158.82
  6. Step 6: Final answer
    x = 287,157.18

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1.5x scale

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.