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Finding the Fourth Proportional to 93,432.51, 128,897.60 and 65,154.60

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Solution

The fourth proportional to 93,432.51, 128,897.60 and 65,154.60 is: 89,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,432.51 : 128,897.60 = 65,154.60 : x
  2. Step 2: Convert to fraction form
    93,432.51/128,897.60 = 65,154.60/x
  3. Step 3: Cross multiply
    93,432.51x = 128,897.60 × 65,154.60
  4. Step 4: Simplify right side
    93,432.51x = 8,398,271,243.19
  5. Step 5: Solve for x
    x = 8,398,271,243.19/93,432.51
  6. Step 6: Final answer
    x = 89,885.96

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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.