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Finding the Fourth Proportional to 93,657.26, 129,210.90 and 57,785.06

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Solution

The fourth proportional to 93,657.26, 129,210.90 and 57,785.06 is: 79,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,657.26 : 129,210.90 = 57,785.06 : x
  2. Step 2: Convert to fraction form
    93,657.26/129,210.90 = 57,785.06/x
  3. Step 3: Cross multiply
    93,657.26x = 129,210.90 × 57,785.06
  4. Step 4: Simplify right side
    93,657.26x = 7,466,459,609.15
  5. Step 5: Solve for x
    x = 7,466,459,609.15/93,657.26
  6. Step 6: Final answer
    x = 79,721.10

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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.