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Finding the Fourth Proportional to 61,010.90, 84,355.69 and 53,435.51

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Solution

The fourth proportional to 61,010.90, 84,355.69 and 53,435.51 is: 73,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,010.90 : 84,355.69 = 53,435.51 : x
  2. Step 2: Convert to fraction form
    61,010.90/84,355.69 = 53,435.51/x
  3. Step 3: Cross multiply
    61,010.90x = 84,355.69 × 53,435.51
  4. Step 4: Simplify right side
    61,010.90x = 4,507,588,894.77
  5. Step 5: Solve for x
    x = 4,507,588,894.77/61,010.90
  6. Step 6: Final answer
    x = 73,881.70

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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.