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Finding the Fourth Proportional to 153,935.70, 214,985.10 and 153,935.70

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Solution

The fourth proportional to 153,935.70, 214,985.10 and 153,935.70 is: 214,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,935.70 : 214,985.10 = 153,935.70 : x
  2. Step 2: Convert to fraction form
    153,935.70/214,985.10 = 153,935.70/x
  3. Step 3: Cross multiply
    153,935.70x = 214,985.10 × 153,935.70
  4. Step 4: Simplify right side
    153,935.70x = 33,093,881,858.07
  5. Step 5: Solve for x
    x = 33,093,881,858.07/153,935.70
  6. Step 6: Final answer
    x = 214,985.10

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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.