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Finding the Fourth Proportional to 876,152.75, 1,208,987.72 and 508,544.93

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Solution

The fourth proportional to 876,152.75, 1,208,987.72 and 508,544.93 is: 701,732.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,152.75 : 1,208,987.72 = 508,544.93 : x
  2. Step 2: Convert to fraction form
    876,152.75/1,208,987.72 = 508,544.93/x
  3. Step 3: Cross multiply
    876,152.75x = 1,208,987.72 × 508,544.93
  4. Step 4: Simplify right side
    876,152.75x = 614,824,580,685.61
  5. Step 5: Solve for x
    x = 614,824,580,685.61/876,152.75
  6. Step 6: Final answer
    x = 701,732.18

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Double scale
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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.