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Finding the Fourth Proportional to 107,497.76, 148,307.60 and 65,040.80

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Solution

The fourth proportional to 107,497.76, 148,307.60 and 65,040.80 is: 89,732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,497.76 : 148,307.60 = 65,040.80 : x
  2. Step 2: Convert to fraction form
    107,497.76/148,307.60 = 65,040.80/x
  3. Step 3: Cross multiply
    107,497.76x = 148,307.60 × 65,040.80
  4. Step 4: Simplify right side
    107,497.76x = 9,646,044,950.08
  5. Step 5: Solve for x
    x = 9,646,044,950.08/107,497.76
  6. Step 6: Final answer
    x = 89,732.52

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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.