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Finding the Fourth Proportional to 612,430.86, 918,586.89 and 185,970.38

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Solution

The fourth proportional to 612,430.86, 918,586.89 and 185,970.38 is: 278,937.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,430.86 : 918,586.89 = 185,970.38 : x
  2. Step 2: Convert to fraction form
    612,430.86/918,586.89 = 185,970.38/x
  3. Step 3: Cross multiply
    612,430.86x = 918,586.89 × 185,970.38
  4. Step 4: Simplify right side
    612,430.86x = 170,829,955,292.79
  5. Step 5: Solve for x
    x = 170,829,955,292.79/612,430.86
  6. Step 6: Final answer
    x = 278,937.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.