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Finding the Fourth Proportional to 93,436.71, 128,897.80 and 61,157.10

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Solution

The fourth proportional to 93,436.71, 128,897.80 and 61,157.10 is: 84,367.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,436.71 : 128,897.80 = 61,157.10 : x
  2. Step 2: Convert to fraction form
    93,436.71/128,897.80 = 61,157.10/x
  3. Step 3: Cross multiply
    93,436.71x = 128,897.80 × 61,157.10
  4. Step 4: Simplify right side
    93,436.71x = 7,883,015,974.85
  5. Step 5: Solve for x
    x = 7,883,015,974.85/93,436.71
  6. Step 6: Final answer
    x = 84,367.44

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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.