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Finding the Fourth Proportional to 223,707.02, 308,706.59 and 128,147.27

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Solution

The fourth proportional to 223,707.02, 308,706.59 and 128,147.27 is: 176,838.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,707.02 : 308,706.59 = 128,147.27 : x
  2. Step 2: Convert to fraction form
    223,707.02/308,706.59 = 128,147.27/x
  3. Step 3: Cross multiply
    223,707.02x = 308,706.59 × 128,147.27
  4. Step 4: Simplify right side
    223,707.02x = 39,559,905,516.34
  5. Step 5: Solve for x
    x = 39,559,905,516.34/223,707.02
  6. Step 6: Final answer
    x = 176,838.02

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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.