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Finding the Fourth Proportional to 157,087.40, 219,455.80 and 157,087.40

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Solution

The fourth proportional to 157,087.40, 219,455.80 and 157,087.40 is: 219,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,087.40 : 219,455.80 = 157,087.40 : x
  2. Step 2: Convert to fraction form
    157,087.40/219,455.80 = 157,087.40/x
  3. Step 3: Cross multiply
    157,087.40x = 219,455.80 × 157,087.40
  4. Step 4: Simplify right side
    157,087.40x = 34,473,741,036.92
  5. Step 5: Solve for x
    x = 34,473,741,036.92/157,087.40
  6. Step 6: Final answer
    x = 219,455.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.