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Finding the Fourth Proportional to 661,056.85, 991,585.61 and 436,364.77

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Solution

The fourth proportional to 661,056.85, 991,585.61 and 436,364.77 is: 654,547.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,056.85 : 991,585.61 = 436,364.77 : x
  2. Step 2: Convert to fraction form
    661,056.85/991,585.61 = 436,364.77/x
  3. Step 3: Cross multiply
    661,056.85x = 991,585.61 × 436,364.77
  4. Step 4: Simplify right side
    661,056.85x = 432,693,026,642.96
  5. Step 5: Solve for x
    x = 432,693,026,642.96/661,056.85
  6. Step 6: Final answer
    x = 654,547.38

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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.