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Finding the Fourth Proportional to 157,071.26, 216,742.16 and 93,396.76

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Solution

The fourth proportional to 157,071.26, 216,742.16 and 93,396.76 is: 128,877.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,071.26 : 216,742.16 = 93,396.76 : x
  2. Step 2: Convert to fraction form
    157,071.26/216,742.16 = 93,396.76/x
  3. Step 3: Cross multiply
    157,071.26x = 216,742.16 × 93,396.76
  4. Step 4: Simplify right side
    157,071.26x = 20,243,015,499.40
  5. Step 5: Solve for x
    x = 20,243,015,499.40/157,071.26
  6. Step 6: Final answer
    x = 128,877.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.