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Finding the Fourth Proportional to 93,312.20, 128,730.20 and 59,302.46

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Solution

The fourth proportional to 93,312.20, 128,730.20 and 59,302.46 is: 81,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.20 : 128,730.20 = 59,302.46 : x
  2. Step 2: Convert to fraction form
    93,312.20/128,730.20 = 59,302.46/x
  3. Step 3: Cross multiply
    93,312.20x = 128,730.20 × 59,302.46
  4. Step 4: Simplify right side
    93,312.20x = 7,634,017,561.61
  5. Step 5: Solve for x
    x = 7,634,017,561.61/93,312.20
  6. Step 6: Final answer
    x = 81,811.57

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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.