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Finding the Fourth Proportional to 698,804.19, 964,954.76 and 662,931.72

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Solution

The fourth proportional to 698,804.19, 964,954.76 and 662,931.72 is: 915,419.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,804.19 : 964,954.76 = 662,931.72 : x
  2. Step 2: Convert to fraction form
    698,804.19/964,954.76 = 662,931.72/x
  3. Step 3: Cross multiply
    698,804.19x = 964,954.76 × 662,931.72
  4. Step 4: Simplify right side
    698,804.19x = 639,699,115,454.33
  5. Step 5: Solve for x
    x = 639,699,115,454.33/698,804.19
  6. Step 6: Final answer
    x = 915,419.69

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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.