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Finding the Fourth Proportional to 93,223.80, 128,598.30 and 55,490.76

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Solution

The fourth proportional to 93,223.80, 128,598.30 and 55,490.76 is: 76,547.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,223.80 : 128,598.30 = 55,490.76 : x
  2. Step 2: Convert to fraction form
    93,223.80/128,598.30 = 55,490.76/x
  3. Step 3: Cross multiply
    93,223.80x = 128,598.30 × 55,490.76
  4. Step 4: Simplify right side
    93,223.80x = 7,136,017,401.71
  5. Step 5: Solve for x
    x = 7,136,017,401.71/93,223.80
  6. Step 6: Final answer
    x = 76,547.16

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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.