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Finding the Fourth Proportional to 93,782.82, 129,420.39 and 51,341.45

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Solution

The fourth proportional to 93,782.82, 129,420.39 and 51,341.45 is: 70,851.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,782.82 : 129,420.39 = 51,341.45 : x
  2. Step 2: Convert to fraction form
    93,782.82/129,420.39 = 51,341.45/x
  3. Step 3: Cross multiply
    93,782.82x = 129,420.39 × 51,341.45
  4. Step 4: Simplify right side
    93,782.82x = 6,644,630,482.17
  5. Step 5: Solve for x
    x = 6,644,630,482.17/93,782.82
  6. Step 6: Final answer
    x = 70,851.25

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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.