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Finding the Fourth Proportional to 876,988.88, 1,210,244.65 and 474,580.88

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Solution

The fourth proportional to 876,988.88, 1,210,244.65 and 474,580.88 is: 654,921.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,988.88 : 1,210,244.65 = 474,580.88 : x
  2. Step 2: Convert to fraction form
    876,988.88/1,210,244.65 = 474,580.88/x
  3. Step 3: Cross multiply
    876,988.88x = 1,210,244.65 × 474,580.88
  4. Step 4: Simplify right side
    876,988.88x = 574,358,963,774.62
  5. Step 5: Solve for x
    x = 574,358,963,774.62/876,988.88
  6. Step 6: Final answer
    x = 654,921.61

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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.