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Finding the Fourth Proportional to 157,730.40, 236,660.40 and 57,938.40

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Solution

The fourth proportional to 157,730.40, 236,660.40 and 57,938.40 is: 86,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,730.40 : 236,660.40 = 57,938.40 : x
  2. Step 2: Convert to fraction form
    157,730.40/236,660.40 = 57,938.40/x
  3. Step 3: Cross multiply
    157,730.40x = 236,660.40 × 57,938.40
  4. Step 4: Simplify right side
    157,730.40x = 13,711,724,919.36
  5. Step 5: Solve for x
    x = 13,711,724,919.36/157,730.40
  6. Step 6: Final answer
    x = 86,931.40

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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.