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Finding the Fourth Proportional to 103,953.40, 155,113.59 and 97,605.60

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Solution

The fourth proportional to 103,953.40, 155,113.59 and 97,605.60 is: 145,641.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,953.40 : 155,113.59 = 97,605.60 : x
  2. Step 2: Convert to fraction form
    103,953.40/155,113.59 = 97,605.60/x
  3. Step 3: Cross multiply
    103,953.40x = 155,113.59 × 97,605.60
  4. Step 4: Simplify right side
    103,953.40x = 15,139,955,020.10
  5. Step 5: Solve for x
    x = 15,139,955,020.10/103,953.40
  6. Step 6: Final answer
    x = 145,641.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.