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Finding the Fourth Proportional to 93,518.80, 140,623.80 and 78,312.40

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Solution

The fourth proportional to 93,518.80, 140,623.80 and 78,312.40 is: 117,758.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,518.80 : 140,623.80 = 78,312.40 : x
  2. Step 2: Convert to fraction form
    93,518.80/140,623.80 = 78,312.40/x
  3. Step 3: Cross multiply
    93,518.80x = 140,623.80 × 78,312.40
  4. Step 4: Simplify right side
    93,518.80x = 11,012,587,275.12
  5. Step 5: Solve for x
    x = 11,012,587,275.12/93,518.80
  6. Step 6: Final answer
    x = 117,758.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.