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Finding the Fourth Proportional to 690,645.60, 953,237.88 and 464,159.88

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Solution

The fourth proportional to 690,645.60, 953,237.88 and 464,159.88 is: 640,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,645.60 : 953,237.88 = 464,159.88 : x
  2. Step 2: Convert to fraction form
    690,645.60/953,237.88 = 464,159.88/x
  3. Step 3: Cross multiply
    690,645.60x = 953,237.88 × 464,159.88
  4. Step 4: Simplify right side
    690,645.60x = 442,454,779,992.25
  5. Step 5: Solve for x
    x = 442,454,779,992.25/690,645.60
  6. Step 6: Final answer
    x = 640,639.40

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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.