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Finding the Fourth Proportional to 157,168.83, 235,799.80 and 90,656.70

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Solution

The fourth proportional to 157,168.83, 235,799.80 and 90,656.70 is: 136,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,168.83 : 235,799.80 = 90,656.70 : x
  2. Step 2: Convert to fraction form
    157,168.83/235,799.80 = 90,656.70/x
  3. Step 3: Cross multiply
    157,168.83x = 235,799.80 × 90,656.70
  4. Step 4: Simplify right side
    157,168.83x = 21,376,830,617.77
  5. Step 5: Solve for x
    x = 21,376,830,617.77/157,168.83
  6. Step 6: Final answer
    x = 136,011.89

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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.