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Finding the Fourth Proportional to 157,070.40, 235,605.60 and 154,478.40

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Solution

The fourth proportional to 157,070.40, 235,605.60 and 154,478.40 is: 231,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,070.40 : 235,605.60 = 154,478.40 : x
  2. Step 2: Convert to fraction form
    157,070.40/235,605.60 = 154,478.40/x
  3. Step 3: Cross multiply
    157,070.40x = 235,605.60 × 154,478.40
  4. Step 4: Simplify right side
    157,070.40x = 36,395,976,119.04
  5. Step 5: Solve for x
    x = 36,395,976,119.04/157,070.40
  6. Step 6: Final answer
    x = 231,717.60

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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.