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Finding the Fourth Proportional to 438,792.50, 658,188.75 and 106,368.50

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Solution

The fourth proportional to 438,792.50, 658,188.75 and 106,368.50 is: 159,552.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,792.50 : 658,188.75 = 106,368.50 : x
  2. Step 2: Convert to fraction form
    438,792.50/658,188.75 = 106,368.50/x
  3. Step 3: Cross multiply
    438,792.50x = 658,188.75 × 106,368.50
  4. Step 4: Simplify right side
    438,792.50x = 70,010,550,054.38
  5. Step 5: Solve for x
    x = 70,010,550,054.38/438,792.50
  6. Step 6: Final answer
    x = 159,552.75

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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.