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Finding the Fourth Proportional to 61,703.40, 86,647.20 and 61,703.40

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Solution

The fourth proportional to 61,703.40, 86,647.20 and 61,703.40 is: 86,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,703.40 : 86,647.20 = 61,703.40 : x
  2. Step 2: Convert to fraction form
    61,703.40/86,647.20 = 61,703.40/x
  3. Step 3: Cross multiply
    61,703.40x = 86,647.20 × 61,703.40
  4. Step 4: Simplify right side
    61,703.40x = 5,346,426,840.48
  5. Step 5: Solve for x
    x = 5,346,426,840.48/61,703.40
  6. Step 6: Final answer
    x = 86,647.20

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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.