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Finding the Fourth Proportional to 213,136.80, 294,128.81 and 117,643.52

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Solution

The fourth proportional to 213,136.80, 294,128.81 and 117,643.52 is: 162,348.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,136.80 : 294,128.81 = 117,643.52 : x
  2. Step 2: Convert to fraction form
    213,136.80/294,128.81 = 117,643.52/x
  3. Step 3: Cross multiply
    213,136.80x = 294,128.81 × 117,643.52
  4. Step 4: Simplify right side
    213,136.80x = 34,602,348,541.81
  5. Step 5: Solve for x
    x = 34,602,348,541.81/213,136.80
  6. Step 6: Final answer
    x = 162,348.07

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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.