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Finding the Fourth Proportional to 153,605.30, 215,669.50 and 153,605.30

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Solution

The fourth proportional to 153,605.30, 215,669.50 and 153,605.30 is: 215,669.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,605.30 : 215,669.50 = 153,605.30 : x
  2. Step 2: Convert to fraction form
    153,605.30/215,669.50 = 153,605.30/x
  3. Step 3: Cross multiply
    153,605.30x = 215,669.50 × 153,605.30
  4. Step 4: Simplify right side
    153,605.30x = 33,127,978,248.35
  5. Step 5: Solve for x
    x = 33,127,978,248.35/153,605.30
  6. Step 6: Final answer
    x = 215,669.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.