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Finding the Fourth Proportional to 92,875.60, 128,188.74 and 61,047.46

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Solution

The fourth proportional to 92,875.60, 128,188.74 and 61,047.46 is: 84,258.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,875.60 : 128,188.74 = 61,047.46 : x
  2. Step 2: Convert to fraction form
    92,875.60/128,188.74 = 61,047.46/x
  3. Step 3: Cross multiply
    92,875.60x = 128,188.74 × 61,047.46
  4. Step 4: Simplify right side
    92,875.60x = 7,825,596,977.60
  5. Step 5: Solve for x
    x = 7,825,596,977.60/92,875.60
  6. Step 6: Final answer
    x = 84,258.91

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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.