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Finding the Fourth Proportional to 611,606.20, 917,518.65 and 256,656.10

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Solution

The fourth proportional to 611,606.20, 917,518.65 and 256,656.10 is: 385,030.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,606.20 : 917,518.65 = 256,656.10 : x
  2. Step 2: Convert to fraction form
    611,606.20/917,518.65 = 256,656.10/x
  3. Step 3: Cross multiply
    611,606.20x = 917,518.65 × 256,656.10
  4. Step 4: Simplify right side
    611,606.20x = 235,486,758,386.27
  5. Step 5: Solve for x
    x = 235,486,758,386.27/611,606.20
  6. Step 6: Final answer
    x = 385,030.04

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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.