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Finding the Fourth Proportional to 876,804.90, 1,209,860.94 and 532,461.72

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Solution

The fourth proportional to 876,804.90, 1,209,860.94 and 532,461.72 is: 734,718.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,804.90 : 1,209,860.94 = 532,461.72 : x
  2. Step 2: Convert to fraction form
    876,804.90/1,209,860.94 = 532,461.72/x
  3. Step 3: Cross multiply
    876,804.90x = 1,209,860.94 × 532,461.72
  4. Step 4: Simplify right side
    876,804.90x = 644,204,637,073.22
  5. Step 5: Solve for x
    x = 644,204,637,073.22/876,804.90
  6. Step 6: Final answer
    x = 734,718.34

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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.