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Finding the Fourth Proportional to 583,416.48, 805,114.76 and 315,144.48

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Solution

The fourth proportional to 583,416.48, 805,114.76 and 315,144.48 is: 434,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,416.48 : 805,114.76 = 315,144.48 : x
  2. Step 2: Convert to fraction form
    583,416.48/805,114.76 = 315,144.48/x
  3. Step 3: Cross multiply
    583,416.48x = 805,114.76 × 315,144.48
  4. Step 4: Simplify right side
    583,416.48x = 253,727,470,804.80
  5. Step 5: Solve for x
    x = 253,727,470,804.80/583,416.48
  6. Step 6: Final answer
    x = 434,899.39

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Half scale
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Double scale
Find fourth proportional to 583,417.48, 805,116.14 and 315,145.48
Similar ratio
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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.