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Finding the Fourth Proportional to 103,855.40, 155,424.70 and 62,332.20

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Solution

The fourth proportional to 103,855.40, 155,424.70 and 62,332.20 is: 93,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,855.40 : 155,424.70 = 62,332.20 : x
  2. Step 2: Convert to fraction form
    103,855.40/155,424.70 = 62,332.20/x
  3. Step 3: Cross multiply
    103,855.40x = 155,424.70 × 62,332.20
  4. Step 4: Simplify right side
    103,855.40x = 9,687,963,485.34
  5. Step 5: Solve for x
    x = 9,687,963,485.34/103,855.40
  6. Step 6: Final answer
    x = 93,283.19

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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.