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Finding the Fourth Proportional to 545,615.70, 752,688.89 and 423,924.19

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Solution

The fourth proportional to 545,615.70, 752,688.89 and 423,924.19 is: 584,812.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,615.70 : 752,688.89 = 423,924.19 : x
  2. Step 2: Convert to fraction form
    545,615.70/752,688.89 = 423,924.19/x
  3. Step 3: Cross multiply
    545,615.70x = 752,688.89 × 423,924.19
  4. Step 4: Simplify right side
    545,615.70x = 319,083,028,015.25
  5. Step 5: Solve for x
    x = 319,083,028,015.25/545,615.70
  6. Step 6: Final answer
    x = 584,812.77

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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.