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Finding the Fourth Proportional to 93,482.16, 128,961.72 and 63,258

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Solution

The fourth proportional to 93,482.16, 128,961.72 and 63,258 is: 87,266.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,482.16 : 128,961.72 = 63,258 : x
  2. Step 2: Convert to fraction form
    93,482.16/128,961.72 = 63,258/x
  3. Step 3: Cross multiply
    93,482.16x = 128,961.72 × 63,258
  4. Step 4: Simplify right side
    93,482.16x = 8,157,860,483.76
  5. Step 5: Solve for x
    x = 8,157,860,483.76/93,482.16
  6. Step 6: Final answer
    x = 87,266.50

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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.