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Finding the Fourth Proportional to 514,925.15, 710,638.59 and 285,554.30

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Solution

The fourth proportional to 514,925.15, 710,638.59 and 285,554.30 is: 394,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,925.15 : 710,638.59 = 285,554.30 : x
  2. Step 2: Convert to fraction form
    514,925.15/710,638.59 = 285,554.30/x
  3. Step 3: Cross multiply
    514,925.15x = 710,638.59 × 285,554.30
  4. Step 4: Simplify right side
    514,925.15x = 202,925,906,897.03
  5. Step 5: Solve for x
    x = 202,925,906,897.03/514,925.15
  6. Step 6: Final answer
    x = 394,088.16

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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.